It’s easy to see who’s taking the chair (6)
I believe the answer is:
sitter
'chair' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe there's a link between them I don't understand?
'it's easy to see who's taking the' is the wordplay.
'easy' is an anagram indicator (a loosened or easy version of the letters).
'to see who's' becomes 'er' (I can't explain this - if you can you should give a lot more credence to this answer).
'taking' is an insertion indicator.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'its' is an anagram of '[its]'.
'[its]'+'er'='siter'
'siter' enclosing 't' is 'SITTER'.
Can you help me to learn more?
(Other definitions for sitter that I've seen before include "Baby minder for pay" , "one rarely missed?" , "one can't stand?" , "Easy shot or catch" , "Child-minder of sedentary disposition" .)