Should I put all employees in an agency on Upwork?

Question

Freelance

Hello!
I read the existing topics here and on Google about creating an agency on upwork, but I did not find the necessary information, so I would be extremely grateful for the answer:
There is a web studio with a dozen employees on staff. Things are going well, but I want to enter the foreign market through the creation of an agency on upwork. If you take only orders with a fixed price, does it make sense to bring all employees to the agency or is it enough to officially keep one PMA in the agency?
UPD, to summarize, the answer is this: taking only fixed price contracts, there is not much difference if only the PM in the agency or even the developers. Looking at the future, it is better to include reliable developers in the agency members so that they receive feedback along with the agency and then it is convenient to take an hourly

Answer 1

then you can work without an agency at all