What is an easy way to determine what changes/updates a user has made to my schedule.

Is there a way, or a filter, that can display changes in activities made between certain dates? I've tried using the filter "Date Last Modified", however, this only displays the current data date once I've used the "Schedule" function.

My end goal is to be able to easily determine or identify which activities that another user within my company has made changes to. They will be updating on their own on the jobsite, and once they have performed the activity status updates, I will need to determine which activities they have updated. I want to be able to do this without reviewing and comparing each activity line item of the schedule. Some of our schedule are in excess of 500 activities. I will using a separate license at another location, however still within the Cloud version of Oracle Prime.