You can edit multiple players at once to apply the same settings to them.
To do so, perform the following steps:
Go to Channels > Location.
In the Managing players pane, select the checkboxes of the players that you want to edit.
Click on Edit in the lower right corner.
In the subsequent window, click on All selected.
Select the settings that you want to edit:
Screen layout
License type
Configuration
Categories
Localization
Display
Once you've made all changes, click Save to save them.