Thanks for all the explanation and videos. My offset challenge is maybe little more simple and it mainly because my Sketchup habits". Here is what I mean with problem to offset the construction line outside of the geometry. In this case (video) it still works fairly ok but if there is more geometry around it has been difficult to define which is the direction that the construction line offset will be created. Naturally it would be great to be able to press for example "arrow up" so that the construction line offset direction would be locked to Z-direction, "arrow left to lock it to X-direction", etc. I am sure that I will get used to this and make it work once I get more experience with MoI.

Anyway, thanks again for great support!