How to get to WMS manager settings: Open Left Main Menu → Settings → Maps → WMS manager.

You can find the manual on how to to add WMS maps here: How to add WMS map.

Each map style is customizable by clicking on the palette on its right side. The options are:

• Add new WMS - to find out more how to add new offline map style please click here.
• Stop using of WMS - editing options for current map style.
• Delete all WMS - by clicking on this option, your offline map style will be change to the one you are currently at.
• Show list of WMS - deleting of map styles.