Axure RP 9 version 18.104.22.16854
In this version, when creating a master by right-clicking on the selected elements, a dialogue box is shown asking for the master name but does not ask for master behavior here, so I cannot choose lock position.
If select lock to master position later from the master list, then the location is default set o 0,0 and cannot move it around (that’s correct by locking). If I move the elements to the desired place in the master, then the master area will start from 0,0 and cover a lot of place unwanted.
I think it would be better if a master drop behavior selection is provided when creating a master from the interface.