Last server records
If you want to hide all other players from visibility zone, you can use /invis chat command. This function is available both on our servers and on KZ-Rush LAN server (which can be downloaded here). After writing /invis you will see a menu, where two options allow you to hide players and water (if map has any). Water means any liquid, for example it could be lava like on kz_kzfr_rabbithighway. Here we have it:
And after pressing 2 it's gone:
Note that invis may have a positive effect on your fps, and what's more important using invis to hide water is forbidden while demo recording.