This is something we are really missing since we switched to Primo VE.

I find a book I want to borrow, my library has it, but it's open stacks, which means I can't request it online to be picked up in the owning library.

In our older catalog we had a pop up message to inform the patrons that they can fetch the item from the shelf themselves.

DTU (https://findit.dtu.dk) solves it like this, which is exactly what we need - see screenshot dtu1.png

Under B, we'd show the possible pickup locations, as we do now.

A is missing in Primo VE.

How it looks before I click on Borrow: see dtu2.png

You don't have to be a member of DTU to open a patron account.