The Manage External Logins page allows you to add or remove external log in options for Single Sign On (Google, Classlink, Clever, etc.)
Navigate to the Profile Page
Click "Manage External Logins"
If you have any active external logins they will be displayed at the top of the page. If you would like to remove any of these logins click the "Trash Can" icon and follow the prompts
To see external logins that are available to you, look for the card called "Other External Login Options". To set up that login, click the button and follow the prompts.