Friends and Members who are not in a Platoon assume SO3.
SO2 Awarded for election into a Platoon. Passing BUDs, and the SERE FTX program.
SO1 awarded for fulltime membership of weekly activities. Including weekend OP's.
Everyone with SOC or higher has a specific role within the community.
Real Seal Platoons are made of 2 Officers - 1 Chief - 13 Enlisted Men
Realistically we could never replicate the real process, however for the Milsim we have a personalized version of training sufficient for being in a Milsim, with instructors and a clearing process.
Additionally, and Initially, new discord members are put into a candidate position. They can elect to become elected into the platoon at any time.
The Real Training and Selection Program: https://en.wikipedia.org/wiki/United_States_Navy_SEALs