OpenStreetMap is a collaborative project in which everyone is welcome to record the reality on the ground; the university does not get to control what is (or is not) mapped on the university campus. There might, for example, be an "unofficial" path used by students but the university leadership does not want students to use it - nevertheless the path exists an can be recorded in OSM. The people who make these edits are not "random people", they are OSM mappers and they have 100% the same rights as your staff members have. OSM is not a tool by which to promote some "official" view of things; if you want full control over the map then you need to make a copy of OSM and edit it in a graphics program. OSM itself is independent of your university.