You wouldn’t need a datastore to do this, in your code you can use a table like so:
local ModeratorUserIDs = {1, 2, 3,} -- Change numbers to real user IDs
game.Players.PlayerAdded:Connect(function(player)
if table.Find(ModeratorUserIDs, player.UserId) then
-- Show that UI by firing a remote event to the client.
end
end)