How can I make shipping address mandatory for local pickup on Shopify?

Affirm Shiping address. Affirm merchant services said they need the billing address and shipping address before loans can be calculated.
My problem is I’m only local pickup only. How do I get Shopify checkout to make the shipping address a mandatory field, but not offer shipping so Affirm has the information they need?

Affirm chat answered my question. The short answer is no until a future release date.