Have you ever played Assassination maps?
The ct must reach a specific place in the game ..The admin determines where that place will be
admin can create 1 zone in the map.. when vip arrived there (enter the zone)..ct win..but if terror can kill vip..ct lose round
admin can save created zone in each map in the 1 .txt or .cfg file
for example see this picture in as_italy map:
when vip arrived there..ct must win
admin must can create 1 zone in map..like this plugin:
https://forums.alliedmods.net/showthread.php?p=1992342