Thanks for contacting us and waiting for us. This is happening because for PADS, the pins are all associated, the 4 pins are connected altogether to Pin 1.
In order to select or highlight each pin, you need to separate them by right-clicking on 'Unassociate all'. Then, if you want to connect them, you should click on 'Associate' and select the pads you want to connect.
Please remember to be careful when doing pin assignments.
Hope that helps!
Answered 1 week, 5 days ago.