Allow Main Task status changes to affect Subitem Tasks

If I have a task with numerous subtasks, and I mark the parent task “Done,” it would be ideal for the subtasks to all become marked “Done” as well.

Currently, if I try to create an automation When “Status” changes to “Done” Then set “…” ← I want to choose Subitem Status here, but I receive the error, “Your previous selections don’t include subitem context.”