User Activity

I have need to output from a Nucleo L476rg to pin PC13 of another Nucleo L476rg, (i.e., to. the B1 USER push-button)Reason for input to this pin (which is connected to the blue USER push-button) is simply that all of the second L476rg's other pins ar...
Are there pins which enable external operation of the pushbuttons, the Black (Reset) and Blue (User) pushbuttons?Where is their operation described (and what are they named in that document so I can search for the details in the document)