Linda A

Go to your group settings, there is a tab you can select to apply them to a specific role. it will remove/add them almost instantly I have noticed. This is how I have mine set up.

 
 
I would suggest going to your settings in the AdminCP and disconnect and re-enter all your information. making it revalidate all the information. It may remove all the roles in your discord, but it will put them all right back pretty fast. I have a 110K community, and on discord I have over 5K, for it to go thru every member it only takes maybe 10 minutes at most. The Author has helped me with something like this before. 🙂 

Thank you! 

Thanks for these kind words!
Unfortunately, it isn't possible. Brilliant Discord Integration only synchronizes data from your website to the Discord server and not the other way around.
You will need to create roles on your Discord server yourself (https://support.discordapp.com/hc/en-us/articles/214836687-Role-Management-101). Then, you can assign them to specific groups on your site (in the Discord Settings tab when editing a group).
There is no guide, but if you will have any questions/issues, you can always get in touch either here or in a private message. We'll be happy to help 🙂