data saving

Hi, I run a mobile dance club in the uk. I've had a developer from this site working on a simple datadase with a event calendar with some email support.. this has taken longer than expected but looks and works ok... But i have a problem with the event payment section... Zoho does not save data automatically and the way the adding members and payments has force me to start looking at other software... the designer has given up he cannot work out a way to do it... this is how it works now .

Open calendar
Click on event.
Click book in button.... This opens the booking form which is where the problem lies.
The top section list the event/date/venue so you can double check its the correct event... ok
at the bottom there is a sub +add members form... which is ok... BUT
as you +add members buttons defaults to the bottom of the list so you have to keep scrolling down the list to add a member which really slows down each entrance... but the big problem is you must save the data because if you move from this form you will lose the data... there no option to create a warning window that the data has not been saved or to hide the other tabs until you have saved the data... and the Save button is so low you cannot see it.... and in live test the door crew kept moving from the booking form and losing data which is a nightmare... i think this whole booking form needs changing... can anyone help or advise ? Thanks