Manager gets trophy after a season using this (6,3)

'season using this' is the definition.
The definition suggests a singular noun which matches the answer.

'manager gets trophy after a' is the wordplay.
'manager' becomes 'pep' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'gets' says to put letters next to each other.
'trophy' becomes 'pot' (type of trophy).
'after' means one lot of letters go next to another.
'a' becomes 'per' (eg 'one a day' means 'one per day').
'pot' after 'per' is 'perpot'.
'pep'+'perpot' is 'PEPPER-POT'.

Can you help me to learn more?