There are many solutions online that require modifying a Pi's wpa_supplicant configuration manually to connect to WPA2-Enterprise networks (which is what Bowdoin College uses - where I am), but this is pretty complex, hard to get right and inflexible when the configuration changes.
The "greyed out" network issue is because the Raspbian desktop comes with its own network managing service that does not support more complex WiFi setups used in enterprise/college/university networks.
There is a simple way to fix this though: instead of using the Raspbian’s integrated network manager, use NetworkManager, which is what's used in most Desktop Linux environments. Get connected to the internet either via hotspot or ethernet and install it by running the following in terminal:
sudo apt update && sudo apt full-upgrade -y