To further optimize our processes, we want to develop a POS UI extension for the employees in our local stores. In the online store we have some products that can be customized and we work with line items here, this is still done "manually" in the store on site after payment. To digitize this process as well we would like to build a POS UI extension.
I got the basic installation done and a "Hello World" is running, but the documentation is not very detailed. To have a good starting point, for example, I would like to be able to output a list of a certain category, select a product and then add that to the cart.
TL;DR: I would like to output products from a certain category as a list, then be able to select a variant here and add that to the shopping cart.