Applying Wholesale Costs to Manually Created Shopify Draft Orders

How do I apply wholesale pricing to a manually created draft order in Shopify when using a wholesale pricing app?

To apply wholesale costs to a manually created draft order:

1. Create a dummy customer account with the appropriate customer tag for wholesale discounts.
2. Add desired products to the cart using the dummy account and begin checkout, but do not complete it.
3. Go to your Shopify admin > Orders > Drafts.
4. Select the automatically generated draft order.
5. Remove the dummy customer and assign the correct customer.
6. Complete the order process.