First of all, both the system and Motive should already be calibrated and configured for tracking active markers at this point. If not, please read through the Active Marker Tracking page and set up the tracking volume.
Download template rigid body definition from the following page (Vive_Pro.motive): download link.
Import the downloaded MOTIVE file into Motive. You can either click Open under the File tab or drag-and-drop the file directly onto Motive. Once it's loaded, the template rigid body definition will be listed under the Assets pane as Vive Pro, and you should see the rigid body getting tracked over the HMD markers in Motive.
Next step is to modify the properties of the imported rigid body definition so that it tracks only active markers with matching IDs. To do so, you will need to check active IDs from your HMD clip and input them into the properties of Vive Pro rigid body.
The last step is to refine the template rigid body definition so that it matches exactly how the markers are placed on your Vive Pro clip. Please follow the below steps so that the positions of all 8 markers get calibrated precisely.