NPC Shop

Can somebody make an entity that looks like an NPC that sells items in darkrp. When you press e on it a window will pop up and you can click on which items you want.

I also need a leveling system where after 1 hour of playing a class, or killing people, you unlock the next “rank” which allows you to pick the better job.

Example, if you play gundealer for an hour you unlock Demolition Expert.