Current split payment options are limited to the transaction having to be completed in one go. That means if we charge that one friend £30, and then return to the main order without charging the rest of the payment total, it cancels the charge for the £30.
My simple suggestion is purely to allow the split payment option to take a partial payment and then returning to finalise the remainder of the charge at a later time once the remainder of the group leaves. Effectively it’s keeping the split payments option as it currently is, just with the change that returning to the transaction would not void any payments already made, and just simply reduce the amount remaining to pay, to then be paid at the end of the transaction
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