auto data saving

Hi guys. i have someone building a dance club databas for me with creator and i'm being told that data cannot be saved automatically within a form... when we create an event and open the booking form to add customers/members that dat is not stored unless we click the save button at the bottom every time ... whats happening in live tests are mistakes happen on a busy entrance door and while moving around the database sometimes all the data entered on the night can be lost and its even possible to close the whole program without the data being saved... BUT when you build the forms within Zoho it does save data automatically... this is crazy ... is there a way to save data or a way to create a warning box if you try to leave a form without saving?