To use GCash for cash pickup, you first need to send money from your GCash account to a recipient in the Philippines. The recipient can then choose to pick up the cash at any partner remittance outlet like Cebuana Lhuillier or M Lhuillier. Ensure that the recipient has a valid ID for verification when collecting the cash. For more detailed instructions and locations, it's best to check the GCash app or their official website. Remember to keep an eye on any transfer fees that may apply.