Cohorts is rolling out gradually (see the Cohorts overview).
The track builder never offers this trigger directly. A cohort track is created
from a cohort program’s page, so you need a program first: see Cohort
programs.
Created from the program, fixed for life
A cohort track starts on its program’s page. Create a cohort track and Create a per-person track open the track editor with the trigger, the run mode, and the program already filled in, and the builder shows the trigger as Cohort · Once per cohort or Cohort · For each person. Attaching tracks to a program needs editor access on it (see the People list).
A program has at most one Once per cohort track, counting drafts, and any
number of For each person tracks. Archiving the cohort track frees the slot.
The run mode and program are the track’s identity, so they’re fixed from then
on. The builder shows both read-only, and an existing track can’t be re-pointed
at a different program, switched to the other run mode, or turned into a cohort
track later. Filters, steps, and everything else stay editable. To change the
run mode or program, archive the track and create a new one.
The run mode determines which step types the track can contain. Steps that act
on an individual person, like Introductions, Mentor Assignment, Tasks, Add to
Track, or Webhook, can’t run once per cohort. Each one shows an inline error,
and publishing is blocked until you resolve or remove them.
Start from an existing track
Instead of building from scratch, Import an existing track on the program’s page copies one of your existing tracks into a new draft already wired to this program and run mode, and opens it in the builder. The source track is never changed. Only your non-archived, non-cohort tracks are offered, since a cohort track already belongs to a program and can’t be moved to another. The copy carries over every step. Any that don’t fit the chosen run mode, like an Introductions or Tasks step imported into a once-per-cohort track, are kept but flagged as invalid in the builder, the same as if you’d added them there directly. Resolve or remove them before you can activate the copy.When per-person tracks start
A cohort has one clock: its first day. Day 1 of every per-person track is the first day of the cohort’s dates, at the program’s start time, read in each person’s own timezone. A 9:00 AM start lands at 9:00 AM local time for everyone, and later steps count from that same day. Per-person cohort tracks are not timed from each person’s own start date; that anchor belongs to the First day trigger, a separate feature. Most people land in a cohort days before it starts, and their tracks don’t start early. Each person is enrolled when the cohort opens, so the cohort, and its channel if it has one, exists before anything is sent. Someone who joins on the start day converges onto that clock: steps already due are delivered right away, and the rest keep their scheduled days. Someone who joins after the start day is enrolled and invited to the channel right away, and their track runs from the beginning at the next weekday slot during business hours, counting forward from there, rather than delivering past days all at once.Where each run mode sends
A Once per cohort track speaks to the group. Its steps post to the cohort channel by default, so the whole cohort receives messages, quizzes, or surveys together. A step can instead target a specific Slack channel, that channel’s members, specific people, or groups. Destinations relative to one person (User, Manager, Mentor, and the like) aren’t offered, because the track runs once for the whole cohort.There’s no group DM option for a cohort. Slack caps group DMs at 9 people, so
the cohort channel is the cohort’s one shared space.
Editing a published cohort track
You can edit a cohort track while cohorts are running through it. Edits apply to steps that haven’t been sent yet, including in runs already in progress. The editor shows a notice reminding you of this when you edit a live cohort track.Related
Cohorts overview
How cohort programs, cohorts, and tracks fit together
Cohort programs
Create a program: membership, schedule, and channel
Facilitators
Put the people who run each cohort in its channel
Create a track
The track builder, step by step