When I try to add new objects I don’t see verity of draw types in the “select object type” list (only a few or none of them). Why?
By default the AddMagMap shows types for the last map in the dialog. So if you just created the map only those objects will be shown that were used in that map. You can easily switch to types from any of the map (including both custom and preinstalled) by the drop down list at the top. Alternatively, any of the drawing type can be selected with Select Type dialog (green arrow). The drawing type determine look on PC screen, look on GPSR screen is determined by Groups/Layers dialog, which are the same for all maps and can not be modified.