Per-platform composer options: Stories, Reels, first-comments, and the things only one platform supports

A post going to Instagram, Facebook, Threads, LinkedIn, TikTok, Reddit, X, Bluesky, YouTube, and Pinterest is technically one post. It's also ten platform-specific versions of that post, each with native features the others don't have.

The composer surfaces those native features per platform. Same underlying caption + media, different toggles per platform tab. Here's the per-platform tour of what's available and when to use it.

Facebook: Stories, Reels, page targeting

When you check Facebook in the composer, you get a Facebook tab with native FB-specific options:

Story. Schedule a Story (24-hour ephemeral post) instead of a feed post. Requires media (image or video) — the composer runs a pre-flight media-gate check at schedule time so you don't ship a text-only Story that silently no-ops at FB. (Earlier versions of the tool let this through; we now refuse to schedule a Story without media.)

Reel. Schedule a Reel instead of a feed post. Requires a vertical 9:16 video. Video-gate pre-flight catches missing or wrong-format video before scheduling.

Page targeting. If your pen name has multiple Facebook Pages connected (rare but possible — author Page + reader-group admin), pick which Page receives this post. Default is your primary author Page.

Draft mode. Schedule as a Facebook draft instead of publishing. Useful when a co-admin needs to review on the FB side before it goes live.

Instagram: Reels, Stories, Trial Reels, cover image

Instagram tab options:

Reel. Vertical 9:16 video, scheduled as a Reel rather than a feed post. Same vertical-video file works on TikTok and YouTube Shorts via cross-posting.

Story. On the roadmap; not yet shipped.

Trial Reel. Posts the Reel as a "trial" to a small subset of your followers first. Instagram surfaces engagement metrics quickly; if it does well, you can graduate it to your full audience. The composer handles the trial → graduate flow as one coordinated operation.

Cover image. Pick which frame of your video shows up as the cover when readers see the Reel in your grid. Drop in a custom image, or pick a frame from the video.

Collaborators. Tag co-author or community-account accounts as collaborators. Both accounts then own the post.

User tags. Tag users in the image (Instagram's native feature for tagged-in-photo content).

Threads: topic tags + chains

Threads tab options:

Topic tag. A single Threads-native discoverability tag (like a hashtag but more featured). Pick from the dropdown or type your own. Surfaced higher in Threads' algorithm.

Thread chain. Break a long post into a thread of replies (the Threads equivalent of an X thread). The composer takes one block of text, splits at your insertion points, and schedules them as sequential replies. Great for narrative content that's too long for a single Threads post.

LinkedIn: first-comment + document carousels + Company Pages

LinkedIn tab options:

First comment. A comment auto-posted by your account immediately after the main post lands. LinkedIn's algorithm surfaces posts whose authors comment first — adding a CTA, a related link, or a thank-you in a first comment is one of the most-effective LinkedIn-specific tactics. The composer schedules both the post and the first-comment as a coordinated pair.

Document title. When you upload a document-style carousel (LinkedIn renders these inline in the feed), pick the title shown above the carousel. Default is your post caption's first line.

Company Page targeting. If your pen name owns a Company Page in addition to your personal LinkedIn, pick which one receives the post. Personal-voice content and company-update content are different audiences.

TikTok tab options:

Auto-music. TikTok-native: the platform picks a trending audio track for the video automatically. Faster than picking one yourself; algorithmically aligned with what's trending. The per-day toggle on the campaign review step controls this.

Share-music tickbox. When you generate music with Magnific or add your own audio, the share-music tickbox lets the audio be reused by other TikTok creators. Default is off (your audio stays yours); flip on if you want your audio to spread.

Draft mode. Send to TikTok as a draft instead of publishing. You finish the post on the TikTok app and publish manually. Useful when you want to add native TikTok effects that the API doesn't support.

Privacy. Public, friends-only, or private. Default public. Friends-only is useful for testing audio choices before going public.

Cover frame. Pick which video frame appears as the thumbnail. On the roadmap as a video-frame slider; today you can upload a custom thumbnail or accept the default first-frame.

Allow duet/stitch. Let other TikTok users duet or stitch your video. Default on; turn off for content you'd rather not have remixed.

YouTube: title + visibility + AI disclosure

YouTube tab options:

Title. REQUIRED for any YouTube video post — YouTube doesn't let you post without a title. The composer prompts you for one even when other platforms only need the caption.

Visibility. Public, unlisted, or private. Public is the default for most posts; unlisted is useful for content you want shareable by direct link only (interview clips, ARC announcements to your newsletter).

AI disclosure. Mark whether the video contains AI-generated content per YouTube's recent disclosure requirements. The composer surfaces this as a checkbox; you confirm at schedule time.

Reddit: subreddit + title + flair

Reddit tab options:

Subreddit. REQUIRED. Pick which subreddit the post goes to. Each subreddit has its own rules — the composer doesn't enforce them, but it does store the subreddit name in the post metadata for later analytics.

Title. REQUIRED. Reddit posts have a separate title field from the body. The composer prompts for both.

Self vs link post. Self post (text body) vs link post (URL + optional caption). Pick which type Reddit should treat the post as.

Flair. Pick from the subreddit's available flairs. Some subreddits require flair; the composer warns you if so.

Pinterest: title + board + link + cover image

Pinterest tab options:

Pin title. Pinterest pins have their own title field separate from the description. The composer takes your default caption as the title default; override per pin.

Board. Pick which Pinterest board the pin lands on. Each pen name has its own connected Pinterest, with its own boards.

Destination link. The URL the pin clicks through to. Defaults to your branded short link if one is in the caption; override to point at any URL.

Cover image. For multi-image pins, pick which image is the cover (the one shown in feeds and search results).

Per-platform queue scheduling

Beyond the per-platform composer options, the queue surface lets you schedule the same post to different time slots per platform. A post going to TikTok + LinkedIn doesn't have to ship at the same time on both — TikTok at 11am Central when your audience is active, LinkedIn at 8am Eastern for the morning-coffee scroll. Each platform-leg gets its own time slot from the queue configuration.

This is the ATH-207 work that shipped recently: per-platform queue scheduling, where each connected account on a pen name has its own queue rhythm and the same composed post lands on each platform at its respective optimal time.

Per-leg edit-after-publish

Once a post has shipped to multiple platforms, the edit dialog treats each platform-leg as independent. Edit your Threads caption (Threads supports editing) without touching the LinkedIn version (LinkedIn also supports editing) without touching the Instagram version (Instagram doesn't support editing — that leg just shows as read-only).

The edit dialog shows you what's editable per platform and what's not, so you don't waste time trying to edit an Instagram post that the platform won't let you change.

Common mistakes

1. Treating multi-platform posts as one identical post. They were never identical — the per-platform tabs are how you take advantage of native features instead of pretending each platform is the same.

2. Forgetting the LinkedIn first-comment. Highest-leverage LinkedIn tactic. Add a first-comment to every meaningful LinkedIn post.

3. Posting Stories without media. The pre-flight media-gate catches this before scheduling, but if you're confused about why a Story post is refusing to schedule, check the media tab.

4. Skipping topic tags on Threads. Free discoverability lift. Pick one per post; the dropdown shows the popular ones.

5. Not using per-platform queue scheduling. Same post at optimal time for each platform >> same post at one compromised time across all platforms.

What to do next

For carousel-specific options (across platforms), carousel modes explained.
For per-day overrides on the AI media side, per-day Regenerate-with.
For the Plugin's view of all of this through Claude, the plugin landing page.
For pre-flight reliability features (account-active checks, failure alerts), when a post fails.