Place, locate (7)
I believe the answer is:
This clue is a double definition.
'place' is the first definition.
(situate can mean to place or position)
'locate' is the second definition.
(I know that locate can be written as situate)
(Other definitions for situate that I've seen before include "put in context" , "Locate" , "Position" , "Place in a particular location" , "station" .)