Open the schematic symbol in the Schematic Symbol Editor and click on the Footprint attribute in the right hand panel. This opens the Footprint Manager. Enter the name of the Footprint the you created on the search box at the top. Search. Click on the correct entry in the list that is populated .. Check that the symbol pins are correctly mapped onto the Footprint pads. Adjust if necessary. ClivkbUpdate. Save the symbol. Done