Your role as the leader means that you're the clearinghouse for who gets assigned what on your team (generally). You're not delegating a task when it's not a task you would normally do, and you're simply assigning that task among members of your team. This is an example of task assignment. Delegation, on the other hand, is you turning over responsibility for one of your regular responsibilities—something you routinely do—on a permanent or long standing basis, to one of your directs.
