Party with people present (8)
I believe the answer is:
donation
'present' is the definition.
(thesaurus)
'party with people' is the wordplay.
'party' becomes 'do' (do is a kind of party).
'with' means one lot of letters go next to another.
'people' becomes 'nation'.
'do'+'nation'='DONATION'
(Other definitions for donation that I've seen before include "An offering or charitable gift" , "presentation" , "present" , "Do anoint by way of a gift" , "Gift of money as to charity" .)