[iiNzTicTx]

1. Define factions, an unique ID for each:

#define LSPD 1
#define FBI 2

2. You need three arrays to detect: rank, duty and the faction each player is in.

FactionRank[MAX_PLAYERS];
Faction[MAX_PLAYERS];
bool:FactionDuty[MAX_PLAYERS = false;

3. You then can make a command to set the faction that player is in, another command to set the rank. This should set Faction[playerid] equal to the faction ID the player is in.

4. A /duty command that sets the player skin, colour and weapons. You should then set FactionDuty[playerid] to true.




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I would actually do,

enum playerinfo {
faction,
rank,
duty
}
new pInfo[MAX_PLAYERS][playerinfo];

instead of what I said above, however I split it to make it easier to understand for you ! Hope that helps!