Activity Logs is available under Administration


Activity logs icon


Logs viewer is available under the Administration tab


The activity logs contain every logs on the creation, change and deletion of objects by the users


Enable Logging

In Administration->Settings, check the Enable Activity Logs box 

Activity logs enable checkbox

Activity logs warning icon Note that by enabling the logging, the performance of your system may slow down due to additional database accesses


View the logs

Go Administration->Logs


Activity logs screenshot


You can filter the logs in the left panel, or search them by description.