Level Sequence

Hello guys,
I have 4 different Level and 4 different level sequences, I want all those level sequences in one master level sequence, what would be the work flow for this approach to see all level sequences in on place?
What I am doing is and what my understanding is to have once master persistent level and adding all those 4 level in on persistent level, and creating one sequence to call all 4 sequences as shot or subsequences but unfortunately it’s not working. what am I missing or am I doing it completely wrong. looking for the proper work flow to achieve this. Any help will be appreciated.

Thank you in advance.