add ins

I am trying to create a superelement mesh. I want to input add-lines. Is there any problem if the add lines intersect? Also, I am trying to add points from map but there is not "active " choise to select the map. There is only a selected "inactive" checkbox.

Generally Add-ins can intersect, but depending on  the mesh generator you use  especially small angles between add-ins or add-ins intersecting at vertices can cause problems.

The 'active' check box is not available if your screen resolution is less than 1280 x 1024, which is the minimum resolution required for running FEFLOW properly.