How to add permissions (groups) to dremio account

On linux.

dremio runs as user dremio. Adding groups via usermod -a -G dremio does not seem to work. Can we just delete the user and restart? Looking for the user creation step in the code I guess.

This might be relevant

Can you briefly explain what you are trying to do & accomplish?
If just creating a group in linux, you can try

sudo groupadd -r dremio

This might be relevant: