Hello Laura, 

Thank you for your very detailed reply. 

It certainly looks like there's an answer in there somewhere.

However, that's not what my quickbooks looks like. There is no Customer Centre, I find Customers through the Sales tab and none of the option you mentioned are available. 

I guess, I just got the wrong version (QB Online Plus), which I was told included projects and it does, but with features missing apartently. 

Either way, thank you for time and effort on this matter, but I have decided to go with another, simpler app.

Cheers!

Evie