How do I show the J# on an interconnect for a PCB that has multiple connectors?

Hello,

I am experimenting with creating one-line drawings. We show PCBs in the schematic as "black boxes" with connectors that are added seperately, being subordinate to the PCB.

If I want to show a few of those cables in the interconnect how can I get the J# to automatically show?

A PCB representation could have 2 connectors or it could have 30.

Do I have to put in a separate symbol for each connector?

SolidworksElectrical