What plugin are you actullay using? I reccommend you use essentials with essentials spawn etc. Also you need to set a spawn do to do go to the location were you want to set it and do /setspawn
when u use waypoint, my favourite, and use the normal permissions u must must make edit the file or when you not have permissions you only set the spawn, with operator rights, with the command /spawnadmin set . than can normal users use the command /spawn . XD Mix