DarkRP Block Entity Spawn From Admins

Hello! I have a Gmod server that I have an issue with… admins can spawn entities… I don’t want them to be able to because it’s cheap and they can spawn ammo and such. It would be great if you could provide a script & where I need to place it! Thank you(:

p.s. I want it so ONLY superadmin can spawn things

Additional Information:

*Admin mod: ULX
Gamemode: DarkRP

any other important information? Please let me know.