TL;DR: Whenever someone creates a new subitem, they automatically become its owner. No more "who added this?" investigations or manual ownership assignment. Setup takes 1 minute.
What this does
Recipe:"When subitem is created, assign creator as owner."
The moment a new subitem is added, the People column on that subitem is auto-populated with whoever created it. No matter who's adding subitems — team members, guests, automations triggered by other people — the creator owns it.
When to use it
Accountability by default — every subitem has a clear owner from the start
You'd rather opt out of ownership (delete the value) than chase missing assignments
Customer support / triage workflows where the person who logs the issue owns it until reassigned
Standardizing onboarding workflows where each new task is self-assigned to its creator
If you want every new subitem assigned to a specific person (not the creator), use the "When subitem is created, set owner to value" variant instead — it hard-codes a single owner regardless of who created it.
Before you start
A People column on the subitem — this is where the owner is set
Set it up
Open Automate → Create on your board.
Copy the recipe text above and find it in your board's automation center, then click Use Template.
Configure: select your subitem's People column (the "owner" destination).
Click Create automation.
Test that it works
Create a new subitem on any item.
Open the subitem and check the People column — your name should be there automatically.
Have a teammate create a subitem under the same parent — confirm their name lands in the People column.
Common gotchas
The People column must exist on the subitem. If it doesn't, the automation has nowhere to write.
Creator means the user who clicked "Add subitem" — not the parent's owner. If a teammate adds a subitem on your item, they own it (not you).
Automations that create subitems also count. If a recipe like "When status changes, create a subitem" fires, the user who triggered the upstream change becomes the new subitem's owner.
Existing subitems are not back-filled. This recipe fires on creation only. To assign owners to subitems already on the board, do it manually or use a status-triggered People-column automation.
For role-based assignment (e.g. all "Design" subitems go to one person, all "QA" go to another) use the by-name variant: "When subitem is created and if the name is this name, set owner to value."