I am making a todolist app. How to change a daily activity in just one day?

Right now my app is almost complete but I want the user to be able to edit or delete a daily activity for just one day.
Can someone help me do it?
The app works by appending every day 2 lists, one is single day activity list and the other is daily activity list. When the user attempts to edit or delete an activity that’s from daily list, a message appears asking wether he wants to change the activity always or just for this day.

How can i make the activity disapwar for just one day?

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