On Galaxy forge create two wormholes, click on one to select it then hold ctrl and select the other one.  This will create a normal phase lane between to two.  Select the phase lane then edit it in the control box and change the connection from phase to wormhole.  On your map it will change from grey to blue.  If you leave it at grey any upgraded ship can travel between the two like a pair of normal planets.  Once it is blue a ship has to have wormhole jumps researched and the travel will become instant. 

Hope it helps.

Thanks, I was talking about the first, but your answered my question