probably a simple thing but when i start drafting a model i start in the middle of the relevant floor plan but when i come to the elevations the height markers are at varying distances from the model and if i drag them into position it messes up the heights, how should i be doing this?
Drawing a scope box around the plan and then assigning the levels to the scope box can help as well. As a resource to help you understand the positions of levels and grids in views you can take a look at these videos.
http://help.autodesk.com/view/RVT/2018/ENU/?guid=GUID-30FC9B9E-EF01-9E65-007A-B358D0D8CFD7
http://help.autodesk.com/view/RVT/2018/ENU/?guid=GUID-74EB2807-8377-4A24-A2B0-7C01163078CC
