The championships is designed around having up to 22 full time Race Drivers. For Race Drivers, they have no handicaps placed on them, therefore having a higher potential than Manager-Drivers.
4.1.2 Manager-Driver
In the occurrence of a lack of competitors to take the driving seats, team managers can take control of the driving duties of one of their cars in order to make sure that there is still a 22 car field. Manager drivers will receive full points, however will only be afforded 60 skill instead of 80 in their Setup Bank. Manager-Drivers are not required to vacate their seats, though should take the opportunity if presented under certain circumstances.
Teams in FFGSC will be somewhat fluid as there will be an allowance of different sized teams. As such, a team will be defined as having a single manager with between one and four entry slots for their cars. They will then have the same amount of drivers as slots to drive those cars (one may be themselves as a Manager-Driver). Teams of any amount of entry slots will contribute points to the Teams Championship as per Article 2.2. Teams may not be officially considered under the same banner if they do not earn points for the same team.
As many non-manager drivers as needed per team can be signed to the team to drive the cars, known as Race Drivers. They are allowed their full Setup Bank. Manager-Drivers can fill in for their own team, but with a reduced Setup Bank (see Articles 4.1.2 and 4.2).
I don't see where it is that we need 2 drivers first
I can be wrong.