A checklist step on a job is also called a task in a few places. That one lives on the job. Ticking it does not finish the visit, and it does not appear as a company task. Finishing the visit is How to finish a visit. Checklist templates are Checklists.
Add one from the schedule
Click an empty slot. The dialog is Add to schedule, with tabs Job, Task, and Event. On Task or Event:
Create task or Create event saves it. The toast is Created — you can edit details anytime. If there are no people yet, the form says to invite them from Settings → Team.
You can also add one without opening the board. Tasks & events in the schedule area has New task and New event. The pages are New company task and New team event. Same fields.
