In simple terms… who provides your Wi-Fi? If it’s not a router you own, “you probably can’t” change it.
If it’s a router leased from your ISP and is for your exclusive use (I.e. not a shared-among-apartments Wi-Fi) then the ISP might be able to do it, or give you instructions.
you should be able to access the router settings directly and make your changes there.
most manufacturers will tell you how to do it on their website.
i'm wondering though … why would you want to?