Admins can edit existing checklists by going to STAFF > show more > Tasks / Checklists. On the Checklist Templates tab, find the checklist you want to edit. Choose the pencil icon to edit:

All of the fields show below with green checkmarksare editable in the checklist, and you can remove tasks, add additional tasks, change the scheduling or change the department as well.

Be sure to update to save your changes!