...
This way you will be able to send a tester to one part of the flow you want to be tested and a regular user can just follow the flow already fully published.
Debug with test users
If the user is a test users, and then every flow the user go through will show up in the tools → error logs. This is the full debug mode.
It is really helpful if you want to figure out the exact flow the user have taken, and help to debug the potential issues.
Don’t forget to remove the test users once the debug is done.