How much inactive time can elapse for a client using the interactive designer. Before it would close out and not save edits?

EDOCBUILDER > eDocBuilder FAQs
 Good question, we do not have any activity timers on forms based eDoc or the Interactive Designer. 

I have seen template range from 1 field and 1 page to, close to 200 fields and multiple pages. So trying to determine the right amount of time a person "should" spend on every template would be impossible.