role-includer

This plugin gets the job done. I'm using it in combination with Ultimate Member, one of those free all-in-one plugins that markets itself as the #1 user profile and membership plugin. However, Ultimate Member doesn't have the ability to assign multiple roles to a single user and it doesn't look like they're going to add it (see this ticket from August 2017). I didn't want another bloated membership plugin because I put all my eggs in this basket, and the client's project I'm working on has a quick approaching deadline. This small little utility plugin came to my rescue and is perfect for just adding in this snippet of much-needed functionality. Thank YOU!

works good

The Plugin Author supports users really fast! Replied to a support question within an hour!