PointShop, create a new window for ADMIN weapon

[excuse me if I’ll make some grammatical error, Im ITALIAN]
I want to add a window in poinshop that allows to buy weapons to ADMIN, the problem lies in the fact that PointShop does not allow to create 2 windows where to buy normal weapons / admin, you know how to do?
I have already tried to create a window called (admin weapon) and to insert the .lua weapons for admin, but entering in to my server, in the pointshop, the window (Admin weapon) was empty.
Solved
I do not understand how, but the problem is solved!

When adding new things to the pointshop windows, the server will need to do a map-change or a server restart before the new items will appear.