No Send to Addon button (WEB)

I have been looking for a send-to addon button for my PVP gear and I can’t see it. I have 2 other specs on the website and I can’t find the button.

This is the ID#


There is only a send to addon button for Best in Bag, not Best in Slot.

It would be nice to have it as a shopping list like it does for enchants and gems.