A CSFBL team has 3 roster levels:
The Active Roster must have 14 hitters and 11 pitchers (25 players in total). You are not allowed to change the number of hitters & pitchers (e.g. 13 hitters and 12 pitchers, or 15 hitters and 10 pitchers).
The AAA roster can house anywhere from 0-10 players and any combination of pitchers and hitters is allowed. AAA is typically for players that are 23 and older but not currently needed and/or ready for the active roster. Players can easily be called up and sent down between AAA and the Active Roster,
The Low Minors roster is the developmental level and can house up to 20 players, including any combination of pitchers and hitters. Only players who have never appeared in a Major League game are eligible for the Low Minors. Players can receive a small bonus to development while in Low Minors generally 1-2 rating pts.
Note that only the Active Roster plays games. There are no minor league games played. Players in AAA and in Low Minors are essentially being held in reserve for future use, but they won't accumulate stats until they join the active roster.
Drafting & The Low Minors
Players drafted in the Amateur Draft report to your Low Minors immediately. As mentioned above, your Low Minors cannot exceed 20 players. If you do not make room for all your draft picks prior to the draft, they will not join your team.
Make sure you have room before your draft spot arrives.
As a player’s career progresses, there are factors that reflect how well the player feels about continuing his career. Players that feel good about their career are less likely to retire. Generally, most young players, and players that continue to perform well and get playing time in later years, will still feel good about continuing their careers. The happier a player is, the greater his chance to come back next year. A player who is unhappy with his career has an increased chance of ending his career at the end of the season. You can offset a player's desire to retire by giving him playing time, but if he performs poorly, it may do more harm than good.