How do you find a “random” altar?

In the editor, the search function includes the names of all Altars. But if the type of Altar is generated randomly on the map, how can you quickly find it? I didn't find a suitable name like "Random School Altar" in the dropdown list of map object names. Maybe that yellow square in the list has some special name?

In short: for the editor with English tabs (like mine):
1. Open the "Adventure objects" tab.
2. Open the "Power Ups" section in this tab.
3. With the standard order of elements in the list, after the altars, there should be a yellow square that says: "Random School Altar".

By the way, such questions should be asked in the general mapmaking section, not here (as indicated in the title, this section contains maps). This is to avoid any confusion.