Copying Spots is easy with SignUp!
You may copy any Spot (shift, job, item) to a new date, new dates or many repeating dates when you first Add a Spot or when you are Editing a Spot.
Please see Step 2 in this help article for guidance: How to Add Spot(s) to your SignUp
Also see:
Can I copy a full day's plan to a new day or new SignUp?
How do I create a recurring schedule for my Participants?