Term: Lead

In Proposal Land, a lead is a proposal team member assigned to coordinate a task area, as in “Who has the lead on that?”

In the real world, a lead is someone (just short of a supervisor) assigned to coordinate a task area. Most often seen on large projects that require layers of supervision and technically or functionally conversant supervision.

In both cases, this use connotes that the position does the work as well as supervises it.