Using POS for all transactions

v7 includes the much awaited offline POS. Yeay !!

However I am trying to figure out if I can use this for creating delivery notes?
or how to use POS for creating Sales Invoice with credit payment option as default.
Haven’t really understood how to use POS (ie. create POS profile, etc.)

Also is it possible to extend the functionality to receiving material too?
It would be ideal for small businesses with unreliable connectivity or businesses in remote areas,
specially now that we’ve got the offline sync working!

Create POS profile, checked stock update and enter default payment options by selecting mode of payment.
for more details please check below links
https://frappe.github.io/erpnext/user/manual/en/accounts/point-of-sale-pos-invoice.html

Currently not available.

Thanks, Rohit