add/remove items on a checklist so it updates on all the cards with the checklist?

[uche abel]

Please i have a checklist on a template board and I want that when i update this checklist here, it updates on all other boards it's attached to

[Hannah Morgan]

Hi @uche abel ! Welcome to the community :) is the idea to update other template cards across other boards? So, let's say you have one card in each board that acts as a template and it contains this templated checklist. When the "master" checklist in your template board is updated, you'd like to automatically update all these other template cards on the other boards? 

Or is the idea to update ANY card on any board that has used this templated checklist (so not just the template cards). 

The latter might be hard to achieve, but the former is a bit more straightforward. If you have one "master" template card, you can attach all the other template cards from other boards to it. When the master template card is updated, you can use butler automation to update the attached or linked cards. E.g.

when an item is added to checklist "Tasks" in a card with a name containing "Master Template", for each card linked in the attachments, add item "{checklistitemname}" to checklist "Tasks"

 
You can also create another rule for when an item is removed from the checklist.