So I'm writing a Rails app where you can assign tasks to either people or teams, using polymorphism. However, I need to give the polymorphic interface a name — I was originally going to use assignable, but then I realized that something that's assignable can be assigned, as opposed to something to which tasks can be assigned.
Here's an example sentence:
A task can be assigned to anything that is ____ (i.e a person or team).
It should be synonymous with "capable of being assigned/performing tasks".
Note: While I'd prefer a single word, a short phrase (one to two words, ideally no more than 20 characters including spaces) would do as well.