It sounds like LTS mode, I was trying to port AG to AMX Mod X but it just give up, just try to look everything related to LTS.
Source Code of AG Mod XAbout spawn points for teams, yes, it's posible too, you have to
create a game_team_master for every team and set his target name with the name of the team, and also set the team index of that team, e.g. (blue team is 0, red team is 1, etc.)
After all of that,
create spawns with info_player_deathmatch and set pev_netname to the team name you set in the game_team_master, then it's done.
Also, don't forget to remove any spawn that doesn't have a team assigned, otherwise it will not work.