Copying a group of items

Im creating a task list that needs to copy each day
based on an opening check list.
I have created the database and data display etc
through the day as things are checked off the items are completed.

at the end of the day Im wanting to copy the list and reset the tasks status to incomplete. ready for a new day

I want to be able to see what was completed and what wasnt each day. and do some stats on how complete it was and identify items that keep getting missed etc

Im stuck on how to replicate the task list each day