To edit a current Checklist Item, always visit your Settings - Checklist.
From here, you can click on the pencil tab to edit any of the Checklist Items you currently have saved.
You have the option to edit the name, how often your volunteers must complete the checklist item, and when it expires. Be sure to share this expiration date with your admin colleagues.
You can also edit when you would like to be reminded of this expiration date.