Thank you - Because there will be different businesses using it.
Or is there a way to give each business a web app / desktop page where they can login and see their own bookings, send invoices etc… using multiple subdomains?
If I understand this correctly, you’re simply giving the photographer access to a single app where they can do whatever they need to do.
If that’s the case, then that is perfectly possible with bubble. Let’s take Xero as an example; you login and do your accounts for your business, send invoices etc. Does that sound similar?
Regarding sub-domains, I’m unsure about that part and it may be difficult (sure others can chip on here although search for this in the forum first). It’s certainly possible to give a photographer a unique link. Something like: myapp.com/photographername - which could even act as a landing page for a portfolio for example.