Check User permissions in SharePoint

You have a lot of users and one of your users has left the team and you would like to check what access he has got to remove it.

Follow those steps

Go to the site and press on settings button and then site settings

Then press on Site permissions

Then press on Check Permissions

Enter the name of the user and press check now

You will get screen containing the access for the user, then you can navigate back to site permissions and open each of those groups and remove the user.