So I just installed the mod. Here's a little rundown on how it works. I think it's only available to ops, but I'll look into changing it.
Choose the destination you want your portal to end up at, and run the command /wpdc [Name]. Your name cannot contain spaces.
Go to the location you want your portal to be, and make a frame of any shape, and fill it in with gold blocks. Equip an item, not a block, and run the command /wppc [Name you chose for destination], [name for portal], [block portal will be made of]. I tried using end portal and nether portal for the portal blocks, but neither worked so I settled on falling water.
Running the command above will bind it to the item you're holding. Rightclick the gold blocks and it will turn into a portal to the destination you chose earlier. You can do the same thing to make a portal back to wherever you started from.