Before you begin: to access production-level settings, you must have adequate permission. You need to be either the production admin or account admin. 

To access the subclips settings, go to your Production Settings as shown below. 

The Subclip tool (also called the Logger application) gives you full control and insight into the subclips of your clips. In this tool, you can edit a subclip, add tags, change IN and OUT points, put a rating to the subclip and much more. In the Subclip Details (logger) article you'll find all the details. 

If you don't want to use this tool, you can disable it as shown below.