I want a certain type of meeting to no longer be selectable when creating a meeting, without deleting that meeting type. How do I do that?

Meeting types are very useful for saving time during preparation. However, you may not want a specific meeting type to be visible when creating a meeting.

First go to 'meeting types' in the menu, select the type of meeting in question and choose 'block' in the top right-hand corner of your screen. You can also unblock this type of meeting using the same button. 

block meeting type ss