To Link Connectors using Sequence Numbers

Place a new Off Page Connector in a drawing. (For example: PageCon1.dgn)
The Property Info icon opens the Property Details section for the connector which shows a Sequence Number property. The property will be set by default to the first available sequence number. You have the option to change it to a preferred number.
Once you have defined a sequence number click Done.
Click OK in the Connectors Options dialog and place the connector in the drawing.
Note: Since the page connector is not linked to another connector, you can change the sequence number from the Element Info dialog if desired.
In a second dgn, PageCon2, place a new On Page Connector which will be linked to an existing page connector. The Available Connectors list will show the list of available connectors in the project and their corresponding Sequence Numbers:
Select the Sequence Number for the connecting Off Page Connector then click OK to place and orient the connector.
Note: If you check the element info the Sequence Number will now reflect the assigned value and it will be read only.
Right click on the new On Page Connector and select Follow Page Connector and Update. The first dgn, PageCon1 will be opened and our Off Page Connector will be updated to show its connection to PageCon2.dgn.
Note: If you open the Element Info dialog. The Sequence Number property will now be read only since our Off Page Connector is linked and the user is no longer allowed to edit it.