Skip choosing the theme every time

• For some clients: in Xero, open the contact → Edit → Sales defaults → Branding theme: SectionTotal.
• For every invoice: in Settings → Invoice settings, drag SectionTotal to the top of the list; the first theme is the default. Every approved invoice with a Subtotal line is then sent by us; invoices without one are left to you.
• Xero mobile app: it has no theme picker, so use one of the defaults above and approve with ⋮ → Approve. The big Email button makes Xero send its own version.