Currently to add manual supports you have to be looking at the model from the bottom or underside of the print to add a support. Can you set it up so that when you are looking at a top down view of the part you can add supports to the underside of the print?
E.g. After auto support, I use the slice view to pick up islands that have no auto generated support and place a support structure on it. The underside of the model gets very confusing with all the support thereand I still miss some of the islands. Now I go through the slice view 1 layer at a time from a top down view (fig. 1) and when I find an unsupported Iland I have to rotate the build plate around to place the support (fig 2)