A key point about a one-on-one: It should be regarded as the subordinate’s meeting, with its agenda and tone set by him. There’s good reason for this. Somebody needs to prepare for the meeting. The supervisor with eight subordinates would have to prepare eight times; the subordinate only once. So the latter should be asked to prepare an outline, which is very important because it forces him to think through in advance all of the issues and points he plans to raise.