One daily entry, many payment channels
The anchor is the end-of-day Z report from your till. It shows net sales, VAT, discounts and the split by payment method. Book that as one daily sales entry, with each payment method going to its own clearing account: cash on hand, card clearing, and one clearing account per delivery platform. Revenue and output VAT are recognised on the day of sale, regardless of when the money arrives.
HelloBooks does not connect to point-of-sale systems. The practical route is to photograph or upload the Z report each night. The AI reads it like any receipt and drafts the daily sales journal from the totals, with VAT at 5% on the taxable sales. The manager checks the draft against the printout and approves it.