Audit tracking: How do you track changes in OS and link with approvals?

Hello! 

What's your company's way of tracking OS changes and pairing them with approvals?

Do you do it manually with a report out of OS that you put in excel and numbered to match the saved approval email in a shared drive? This is how I did it in a previous role where the changes were more manageable :) 

Do you create a custom database table in OS and add a field to tag to those OS change reports to a ticketing system you're managing outside of OS? 

Trying to brainstorm a more efficient way that meets auditors expectations but doesn't involve creating a full time role to pair changes with approvals. Any suggestions on how your company accomplishes this would be very much appreciated! 

Thanks, 
Nicole