If you want to track actions in SkyPrep, including who did the action, when, and to what, scroll down on your Dashboard and click on View All Activity at the bottom of your screen.
Navigate to the Platform Activity Table.
Use the Action Type dropdown to filter between different action types, such as course creation, material deletion, or user enrollments.
The User filter will determine the user who is shown in the table. This includes both the actions that the user has done, as well as actions done to the user.
If you want to only view actions done in a certain time frame, use the Timestamp From and Timestamp To fields to tailor the time period you want to view.