Each instance formwork is marked with a name.

This name is added from the system in the 'source' field of each log entry (for more information on the content of a log entry to see this article). Giving a meaningful name to the instance (eg 'ACME_TEST' or 'ACME_PRODUCTION') you will be able to discriminate the logs from a source or another.

To set a name for instance formwork log on to the web portal as host and navigate in Host -> Portals. You will see the only portal that hosts the instance (the one with ID = 0). 

Edit portal settings by clicking on the pen icon and assign a meaningful name in the Title field.