Count active members currently sitting on each of the given steps.
Sequences
Count active members currently sitting on each of the given steps.
Powers the delete confirmation prompt, which has to tell the user how many
people are on a step before asking what should happen to them. Pass the step
ids as a repeated or comma-separated stepIds query param.
GET
Count active members currently sitting on each of the given steps.
Append a single step to a sequence without resending the whole step list.Soft-delete a single step and renumber the remaining steps.

