If you need to track certain user activities in GP such as master data creation or transaction posting activity, use Activity Tracking to do so.
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To turn on Activity Tracking, select the Activity Type, place a checkmark in the Activity, select User(s) and place a checkmark in the appropriate Company(s).
You can track multiple activities but beware that the Activity Tracking table can grow very large in a short period of time if many activities are tracked. Therefore, turn tracking on for only those activities that are essential and clear the table on a regular basis via Administration>Utilities>System>Activity Detail.