When you open the Fast-travel option, you can select the various areas of the monastery. You’ll also see characters hanging around in that area. Those with the dialogue icons have some potential dialogue options to boost your affinity with them.
Before doing any activity or quests, it’s a good idea to talk around with various students and characters since there might be a chance to have some dialogue options to increase their affinity (Support points) towards you. Selecting the incorrect choice won’t make you lose support points with them.