Drop itens

I want to create a procedure that whenever the player does not have permission X to pick up an item from a specific mod, that item will be dropped.

Because I want to create a server so that certain players can access certain mods, so I want to block them for players who do not have permission, I am trying to do this through this mod that I am creating in Mcreator.

The idea is that if the collected item has a tag for example:
minecraft:
Which is a tag used on Minecraft items, and the player does not allow the item from that mod to be dropped.
Does anyone know how to do this?