I have purchased this item this morning and installed it on my system (I'm having a few issues)
1 - it seems that you can only have ONE Item with Partial payment, not the entire inventory, and it only seems to accept Services in my particular case.
2 - when I actually load the POS session, and goes through the loading sequence, the Screen stays black and the POS app does not function (But the session is started) I have uninstalled your app and everything is back to normal
I have to say that I do have a couple of other 3rd party modules running
I'm running Odoo Ent 12
and the following POS 3rd party apps
pos_reprint and rdflex_pos_multi_currency
I need to be able to process partial payments on an entire order please not jus t a single item