The automatic posting switch
One master switch pauses automatic posting on every platform without losing your per-platform settings.
Settings → Posting schedule has one master switch: Auto-post new TikToks. On, each platform follows its own setting; off, automatic posting is paused everywhere. (The older layout has Automatic posting with two choices, Follow platform settings and Pause automatic posting.)
On lets each platform's own "Auto-post new TikToks" switch (the Post to tiles under it, or that platform's card in Settings → Accounts & platforms) decide what happens: a platform that's on auto-posts, one that's off waits for you.
Off stops every platform's automatic posting at once, even ones switched on individually. Your per-platform choices are kept — nothing is turned off — so posting picks back up exactly where it left off once you switch it back on.
Manual posts and older YouTube description updates are separate from this switch and are never affected by pausing.
Under the switch, a short reminder covers another repurposing tool that also auto-posts your TikToks: turn off the auto-posting you don't want duplicated. See Using another repurposing tool too.
While automatic posting is paused, a queued item shows as waiting because you approve every post by hand. You can still post any video yourself from Composer, and anything already queued stays queued until you post it or cancel it.
Switching ONE platform's "Auto-post new TikToks" off is different: its automatic posts already queued wait with Post anyway and Cancel — see Automatic posts waiting because auto-post is off.
See Auto-post per platform for the individual platform switches, and Why a post hasn't gone out for the full list of things that can hold a post.