A lot of team having the same set of beliefs (5)
I believe the answer is:
credo
'beliefs' is the definition.
(a credo is a statement of someone's beliefs)
'a lot of team having the same set' is the wordplay.
'a lot of' means to remove the last letter (a lot of the word but not all of it).
'team' becomes 'crew' (crew is a kind of team).
'having' means one lot of letters go next to another.
'the same set' becomes 'do' (synonyms. I am not sure about the 'same' bit.).
'crew' with its final letter taken away is 'cre'.
'cre'+'do'='CREDO'
'of' is the link.
Can you help me to learn more?
(Other definitions for credo that I've seen before include "Statement of faith" , "Guiding principles" , "System of principles" , "Apostles' beliefs" , "piece of sacred music" .)