A checklist is a list of items that need to be completed to resolve the issue. Having completed an item, mark it off it in the checklist, and you won't miss any important detail when working on the issue.
Create a checklist
Open the issue page.
In the top right corner of the screen, tap and select Add checklist.
Under Checklist, name the first item and press Enter on the phone keyboard.
To add another item, enter a new name and press Enter.
To select an assignee or set a deadline for a checklist item, tap next to its name and select an action.
Editing a checklist
Tap the name of a checklist item to change it. Make your changes and press Enter.
To change the assignee or deadline for an item, tap next to its name. Select the desired action and specify a new value.
To add a new item to an existing checklist, tap Add item.
To delete a checklist item, tap next to its name and select Delete.
To delete a checklist, tap and select Delete checklist.