How To Make A Script That Teleports All Players That Stands Of The Parent Of The Block?

How To Make A Script That Teleports All Players That Stands Of The Parent Of The Block? The Players Should "Fade" away when it's activated. Like decreasing the humanoid's Transparency while it's teleporting?

I'm making a game that includes a bunch of spell "circles". I was designing the teleportation circle for players. I wanted no UI Buttons. Just A ClickDetector To The Decal's parent(Brick Part).When ClickDetector ?s Clicked. Its Going To Teleport People (One Or MORE PLAYERS ) To Part Named "Tpad2" While Giving The Visual Effect Of Fading of Players and the spell circle.

I know That This is REALLY Hard To Do But, consider helping sir/ma'am, pleease :3?

Note: The Spell Circle is Basically A decal on a mesh.Mesh is in a Transparent Simple Block Part.

P.S.: This is the code I use for OPENING (not closing and fading) Mechanism for The Spell Circle:

sphere = script.Parent
c = 0.5
b = 0
a = 0
 repeat
	sphere.Size = Vector3.new(b,0,b)  
	sphere.Rotation = Vector3.new( 0, a, 0)
	  
	wait(.01)
	  a = a+4
	
		b = b+c
		
	if b == 8 then
		c = 0
	end
until pigs == 1

The "Pigs" is not mentioned variable. So it Wont Stop XD