The Page and building name are shown to the top left of the white area. Below that on the left is the list of all HVAC Nodes uploaded from the VE model sorted by node number. Note the node numbers are those used by VistaPro when displaying the HVAC network.
A HVAC node can be selected by clicking on the number from the HVAC note list.. The currently selected node is highlighted. You can use the filter box at the bottom of the list to help find nodes typing the number or part of the number of the node. The number of nodes in the list is shown below the filter box.
The button at the bottom of the page opens the Sync to VE dialog where you can upload a new aps file to update the HVAC nodes list.