This is called 'learning the hard way'
Unfortunately - you can't, AND fortunately you can't either!!
The reason is that the objects typically being created, rely on Reference planes to control them (I know objects don't NEED ref planes) .
What this means is you just need to PLAN what you want to do.
ie:
If the clock ONLY ever goes on a wall, create it 'wall hosted'
BUT
If it can also go on a floor, ceiling, etc - its better to create it FACE based, that way it will sit on ANYTHING - even the linked file.
There may be placess where you don't even want hosted elements - like light fittings for example (even ceiling mounted ones), as the architect changes his mind THAT often, you don't want to keep redoing ALL you layouts
Its FUN eh?
Simon