Before inserting an element in your drawing you should make sure that the building location you want to insert the element on is the current building location.
To identify the current building location:
Take a look at the building locations drop box on the Basic View Control toolbar.
OR
See which location is checked in the Building Locations dialog.
To make a different location current within the current view:
Click on the building locations drop box on the Basic View Control toolbar and select the desired location.
OR
In the Building Locations dialog, click in the far left field of the location you want to make current. A check mark indicates the location is now current.