Inability to Log Out

I have two accounts with different access to different collaborative spaces. I can switch accounts on the web app without issue; however, I am stuck with one account on the desktop app. I can't figure out how to log out of the desktop app. I tried opening apps like part design or assembly design from the web app on the other account, but when it opens, it says I don't have access. How do I log out and switch accounts on the desktop app? Thanks in advance.

 

Edu