This Google spreadsheet allows you to quickly set a line-up and have it automatically fill in fielding rotation. Thank you to Chad Capra for creating and sharing this, it's a great tool if you are interested in using!
https://docs.google.com/spreadsheets/d/1dlS0_hJjHQYa6JmzyDncX-w6VrMp9txzmZsTHNfPYEk/edit?usp=sharing
Here is how it works:
Adjustments throughout season (and absences):
Optional (changing batting order vs not)
Default Position Order (aka Fielding Rotation)
Changing Position Order (meaning the "path" players follow as they rotate positions each inning)