1. Find, Edit or Create a suitable PCB Footprint for your module first. 2. Save it with a clear Name and Description. This is to distinguish and clearly identify it in the library. 3. Then create Find, Edit or Create a suitable Schematic Symbol for your module first. 4. Save it with a clear Name and Description. This is to distinguish and clearly identify it in the library. 5. Then assign the Footprint to the Symbol using the Footprint Manager.  6. Placing the symbol in the schematic with the Footprint assigned it it will pull the footprint into the PCB Editor whrn you do Convert to PCB.