Thanks Chris and all makes sense. We did consider a model-driven app using Team Members but the customer specifically wanted pixel point design with an 'idiot proof' canvas app. That's exactly what they got for £5.30 pupm. I'm just not looking forward to telling them that their costs are now going up anywhere between 400% and 700%. It's a real shame because this customer has completely bought into PowerApps and has plans for another 3 apps. I doubt they'll want any more now.