question

For creating an order on your devkit you simply open the Register app, choose products to be bought and finally make a payment (or leave the order open).

In addition to @greg's answer, if you're building a web app for the App Market, you can use our REST API to create orders, add items to your inventory and even make payments. If you're making an Android app, we have our Clover Android SDK. Events from either API or SDK will trigger a webhook notification.

Docs on creating a web app using Clover's REST API
https://docs.clover.com/clover-platform/docs/making-rest-api-calls

Docs on creating an Android app
https://docs.clover.com/clover-platform/docs/clover-development-basics-android


As for how to add items to your merchant's inventory, you can add them individually through the Inventory app on your DevKit ( https://www.clover.com/us/en/help/add-more-items/), or on Clover's Web Dashboard, or by importing items in a spreadsheet. Please see screenshot below.