There doesn't seem to be a way to pull up two specific people in the scheduling view at the same time manually without using filters.
If I search for one person, that's all I can see. Sometimes I need to schedule the same meeting or event for two or more people but have to open their schedules in multiple windows to compare them, if they aren't related by a skill or queue (which usually brings in way too many people).
The button for adding another person is right there, but it only allows you to add a new person from scratch, which I think, should be reserved for the People page.
Why not let this button allow you to manually filter multiple people in this view? Or add a little plus button next to the people search to add another person?