@Emre.IFS  stock visibility is at site level. So if your user has access to a site, then they can see the stock in all locations. What you could do is setup some Part Availability Control that would block reservation/issue of material. Then you could assign this Availability Control to your Locations and thus even if the users could see the stock, they couldn’t reserve/use the qty.

@Marcel.Ausan Thank you very much for your answer. The information was helpful.