edit: Not sure if it was user error and just did not see the "replace” button at the bottom of the column or it was just added. Nevertheless, it works now.
How is the replace screen is suppose to work? I tried to first select the screen I wish to replace, then once the column of available screens appear, I choose my desired screen. However, there is no type of any action or replacement. Any clue on how to use? Any insight is helpful.