Location of silly pal sitting on glue (9)
I believe the answer is:
placement
'location' is the definition.
(placement is a kind of location)
'silly pal sitting on glue' is the wordplay.
'silly' is an anagram indicator.
'sitting on' is a charade indicator (letters next to each other).
'glue' becomes 'cement' (I've seen this before**).
'pal' anagrammed gives 'pla'.
'pla'+'cement'='PLACEMENT'
'of' is the link.
(Other definitions for placement that I've seen before include "seating for dinner" , "location" , "Temporary posting" , "Arrangement" , "period of work experience" .)