The number of cables represented by Multi-cable is controlled via its SCQUAN attribute. It can be set in the Shape Data window or directly on the command line. Connecting/disconnecting Multi-cable shapes to/from different db elements (equipments, sub-equipments, electrical connections) will cause changing STAREF/ENDREF of Multi-cable and all cables below it. Changes to Multi-cable attributes, except NAME, will override changes to Cable attributes.