I have meetings set to 30 minutes as it's usually sufficient. However certain types of meetings such as career planning or portfolio reviews can often go longer. It would be great to be able to offer mentees mentor-specified "types" of meetings.
Ex. I come to Mentor A's page. I see they specialize in several topics and i'd like to talk to them. My options might be to select "30 min general 1:1", "45 min portfolio review", or "15 min quick question" etc.