How to Create a Rotating Work Schedule Calendar/O365/best method

I have been tasked with creating a shared calendar for a department to view employee work schedules (schedule A and Schedule B(. The employees work a rotating schedule that changes every three months with days varying based on which schedule they are on and is a combination of 3 days on 2 days off, 2 days on with 3 days off, etc.. Can anyone suggest the best method for accomplishing this task? My thoughts were to create a list with all employees listing a and b schedules than creating a seperate calendar with a look up to the employee list and connecting perhaps through a workflow.?