Entity Disguise Seller:

[SlicyPicey]

The title says everything. I need help at coding my disguise seller. I want it like if you press E on the Disguise Seller he opens a DFrame where you can choose your disguise and I want it like to be 5000$ each disguise. I have problems at DFrame so hopefully you guys can help me on that. I also wanna add if you buy a disguise you have to wait 450 seconds till you can buy another. Last thing is that I only want the disguise seller beeing used by only THIEFS. Alright thats all hopefully you guys can help me.

init.lua :

AddCSLuaFile("cl_init.lua")
AddCSLuaFile("shared.lua")

include("shared.lua") 

function ENT:Initialize()
self:SetModel("models/props_c17/briefcase001a.mdl") 
self:PhysicsInit(SOLID_VPHYSICS) 
self:SetMoveType(MOVETYPE_VPHYSICS)
self:SetSolid(SOLID_VPHYSICS) 
self:SetUseType(USE_TOGGLE) 
self:EmitSound("sounds/entities/siren.wav", 100, 100)

local phys = self:GetPhysicsObject() 

if (IsValid(phys) ) then 
phys:Wake()

end 

end 

function ENT:SpawnFunction(ply,tr,ClassName)
if (!tr.Hit) then return end 

local SpawnPos = ply:GetShootPos() + ply:GetForward() *10

local ent = ents.Create(ClassName) 
ent:SetPos(SpawnPos) 
ent:Spawn()
ent:Activate() 

return ent 

end 

function ENT:Use( ply, caller )
ply:SetModel("models/player/gasmask.mdl")
print("Succesfully changed your playermodel!")

  end 
function ENT:Think()

end  

shared.lua :
ENT.Type = "anim"
ENT.Base = "base_gmodentity"
ENT.Category = "Slice"

ENT.PrintName = "Disguise Seller"
ENT.Author = "SliceyPicey"
ENT.Purpose = "Disguise"
ENT.Instructions = "Place'n use."
ENT.Spawnable = true 
ENT.AdminSpawnable = true

cl_init.lua :

include("shared.lua") 

function ENT:Draw() 
self:DrawModel()
end

[c👌de_g🎷]

You can open a DFrame on the client from ENT:Use by using the Net Library and networking to the player who used the entity. From there, you can just create the frame you want in a net.Receive callback in cl_init. When the player buys a disguise from the menu, network back to the server to give the disguise and put a cooldown on the player, which you can check in ENT:Use. The theives check can just be done alongside the cooldown checks. All-in-all, here's what your pseudocode looks like:

init.lua
AddCSLuaFile("cl_init.lua")
AddCSLuaFile("shared.lua")

include("shared.lua") 

function ENT:Initialize()
self:SetModel("models/props_c17/briefcase001a.mdl") 
self:PhysicsInit(SOLID_VPHYSICS)
self:SetMoveType(MOVETYPE_VPHYSICS)
self:SetUseType(SIMPLE_USE)
self:EmitSound("sounds/entities/siren.wav", 100, 100)

local phys = self:GetPhysicsObject() 

if (phys:IsValid()) then 
phys:Wake()
end
end 

function ENT:SpawnFunction(ply, tr, ClassName)
if (!tr.Hit) then return end 

local SpawnPos = ply:GetShootPos() + ply:GetForward() * 10

local ent = ents.Create(ClassName) 
ent:SetPos(SpawnPos) 
ent:Spawn()
ent:Activate() 

return ent 
end 

function ENT:Use(_, caller)
if (caller:IsPlayer()) then
local flCooldown = caller.flDisguiseCooldown or 0

if (flCooldown <= CurTime()) then
net.Start("DisguiseMenu")
net.Send(caller)
end
end
end

util.AddNetworkString("DisguiseMenu")
util.AddNetworkString("DisguiseBuy")

net.Receive("DisguiseBuy", function(_, ply)
local flCooldown = ply.flDisguiseCooldown or 0
local flCurTime = CurTime()

if (flCooldown <= flCurTime) then
-- Give disguise here

ply.flDisguiseCooldown = flCurTime + 450 -- Add cooldown
end
end)

cl_init.lua
include("shared.lua") 

net.Receive("DisguiseMenu", function()
-- Create menu here, send net message to "DisguiseBuy" when the player buys
end)

[SlicyPicey]

So I can basically make the DFrame here right?. And how do I make it like if I buy the disguise it automatically closed the DFrame. DFrame are my weakness is Lua.
include("shared.lua")

net.Receive("DisguiseMenu", function()-- Create menu here, send net message to "DisguiseBuy" when the player buysend)

[c👌de_g🎷]

Call DFrame/Close in your DButton's DoClick.