Click the gear icon in the upper right corner of the screen.
From the drop-down menu, click Get Drive for desktop.
Click download for Mac or Windows.
Run the installation file and follow the prompts.
You will be prompted by Google Drive File Stream to log in to your Google account. Log in with your university email address (DirectoryID@umd.edu) and passphrase. You may be prompted to authenticate with Multi-factor authentication.
You can open Google Drive File Stream from your Programs (Windows) or Applications folder (Mac). It will also appear in your icon tray (bottom right in Windows; top right in Mac).
This video demonstrates an alternate way to download and install Google Drive File Stream. Both methods link to a Google support page.