Try this
- Break the activity into planning, execution and follow-up tasks.
- Ask who can own each complete task, including reminders. If the total does not fit either person’s capacity, reduce the activity rather than hiding work in a vague shared label.
A worked example
“There is booking, shopping and arranging transport. Which can each of us take?”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Make ownership explicit, including follow-up, instead of assigning only the visible final task.