1.14. How to use any layer in your Web GIS as a basemap
Any layer (style) created in Web GIS can be used as a source of a tile service and connected as a basemap. To do this, you should:
Create the required layer (vector or raster) and a style for it. Inside the style you’ll find a link marked TMS service - you will need it for step 3;
Enable caching (to speed up Web Map processing, for Premium plan only);
Create “Basemap” resource with unchecked “Use options from QMS” and the URL of the above-created TMS layer.