When you are developing a workflow for multiple users and roles, at least sometimes you must check your app with different accounts. When you use Chrome or Edge, it's not obvious how to switch account in SharePoint on-premises. When you click a button 'Sign out', it automatically logs in with you active account.

I really don't know why the behavior is this. But I totally sure, that there will be no comfortable button for this action.

To switch account in SharePoint on-premises, I use an URL:

https://your-sharepoint-site/_layouts/closeConnection.aspx?loginasanotheruser=true

I just open it in the browser. After that the old session is over, and the browser asks for the credentials to log in.