Did a bit of searching for this and came up short. After some testing I've figured out a way to do this and thought I'd share.
@Brogan if this is of interest please move to Tip and Guides.
VERSION: Tested with v2.1.9 without using other add-ons.
PROBLEM: You want to manually assign/remove...
Need an incentive to increase forum activity?
Make your forum more fun for your users, let them show off how active/engaged they are.
The more fun your forum is, the more your users will want to keep coming back for more.
No one likes a boring forum.
Don't want to give out the awards...