Reading the MS HTML Help Workbench app. documentation, I think I have to create extra files to those generated by Oxygen, and then compile the CHM again. I will update once I have it working.

Hi, I'm just getting started with DITA in Oxygen. I want to generate a CHM Help file and link DITA tasks and topics to forms and controls in MS Access. To do this I need to add numeric "Help Context ID" values to the CHM file, which are then added as properties of the form controls. Can an...