I can act it out for schemer (9)
I believe the answer is:
tactician
'schemer' is the definition.
(thesaurus)
'i can act it out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'i'+'can'+'act'+'it'='icanactit'
'icanactit' is an anagram of 'TACTICIAN'.
'for' acts as a link.
(Other definitions for tactician that I've seen before include "General" , "Strategist" , "Skilful mover" , "Skilled planner" , "Chess player" .)