With the Map Admin form open and in the Map Tab, click Add New Config (1).

Enter the name of the new Config (2), a value and description (3), and then Add (4) to save the new Config

With the Map Admin form open and in the Map Tab, click Edit (1) corresponding to the Config parameter of interest

Click the drop-down (2) to select a different Config item, a value and description (3), and then Update (4)