This app, Draft And Custom Orders For POS, (https://apps.shopify.com/draft-and-custom-orders-for-pos) solves this problem :)
Before this app, you would have to go into the Shopify Admin (on the computer) to create or edit a draft order, and then in order to checkout/charge a customer, you would have to email/send them the invoice link or charge them through your computer. Now with this app, you can create a custom draft order right within POS, and you can add that draft order straight to the POS cart in order to checkout/charge the customer inside your retail store or in person. Much easier and simpler!
Link to the app: https://apps.shopify.com/draft-and-custom-orders-for-pos
More info: https://www.lazertechnologies.com/blog/draft-and-custom-orders-for-shopify-pos
With Draft And Custom Orders For Shopify POS you can now do the following all within the Shopify POS app for any device:
- Add existing products from your current inventory
- Create and attach a new service (including the length of the service, the per-hour rate, and any supplementary notes)
- Create and attach any new custom products that aren't currently in your inventory
- Specify a workflow status with your custom draft order (i.e. New, Estimate, Open, Pending, Completed)
- Create a new and/or attach an existing customer to the custom draft order
- Set a discount on the overall custom draft order
- Email the breakdown of the custom draft order to the selected customer
- Add the custom draft order straight to the POS cart
