Well try to use Clanmod (
http://www.unitedadmins.com), if i'm remember right, this mod has commands like cm_lockt, cm_lockct (but i'm not sure, this commands will work with bots). Or try to find similar plugins on AMX (
http://amxmod.net) or AMXX (
http://amxmodx.org) forums...
And your question is not YaPB (or any bot) related!!! you should post this, in HL1 Mods, or Offtopic forums!