How do you link or connect Solidworks Electrical to Workgroup PDM?

I have installed and setup my Workgroup PDM vault and now I want to link Solidworks Electrical to the PDM. When I open SW Electrical and then click on the "Tools" tab it has button that says "Link to PDM Configuration" and when I click on this the button the configuration window opens but under "General Settings" things are grayed out and I cannot enter the PDM name in the box.

SolidworksWorkgroup Pdm