How do you make a hide GUI script, How do you make it so an individual button is hidden?

I am trying to make a hide team select GUI, but It just won't work and I'm very confused.

I am somewhat of a noob, so please go easy on me!

script.textButton.MouseButton1Down:connect(function()
script.Parent,click.play()
	script.Parent.Text = "Show"
	script.Parent.Position = "{0, 0},{0.501, 0}"
	script.Parent.Parent.visible = false
end)
script.textButton.MouseButton1Down:connect(function()
script.Parent,click.play()		
	script.Parent.Text = 'Hide'
	script.Parent.Position = "{0.086, 0},{0.501, 0}"
	script.Parent,Parent.visible = true
end)

Heres a script I'm trying to use for the team select itself.

game.Players.PlayerAdded:connect(function(newPlayer)
   if newPlayer:IsInGroup(3738803) then  
	Parent.visible = true
	if
[Im confused here]
end

Basically, this is me trying to make it hide if they're not in the group, but show when they are.

Note: The bottom script goes into an individual button.

First of all, I'll go easy on you. In your first script, you are trying to set the position to a string value. Please change it to: script.Parent.Position = UDim2.new(0,0,0.501,0) In the 11th line of your first script, you will have to change it to script.Parent.Visible,Parent.Visible = false. There can be multiple errors in your current line such as script.Parent is not a valid member of "parent" and visible with a "v" won't be working.

To hide the GUI from all the non-group members, all you have to do is add else Parent.Visible = false after you've set Parent.Visible = true for all group members. There is no need to add another if statement there.

Thank you!