Creating a recurring schedule is easy with SignUp.com!
To create recurring Spots (shifts, jobs, items to bring) over several days, use the repeating pattern option when Adding or Editing a Spots in your SignUp. Please see Step 2 in this help article: How to Add Spot(s) to your SignUp
If you want to give a Participant a recurring assignment, please see this help article for guidance: Can Participants sign up for a recurring shift?