It can be done, but it is only recommended with reservations, due to the high risk that one person will over-write the work of another.

Web applications work via requests. You send a request to a web page to view it, then you fill out a form and send another request to submit that information to the server and get back a response. The web is stateless, which means one request does not know anything about previous or future requests made by you or any other user. We have also implemented an auto-save feature in our application - when you click the "Next" or "Previous" buttons, for instance, the application automatically saves your page - which complicates matters further.

So what can possibly happen goes like this:

• Person A requests a plan page
• Person B requests the same plan page
• Person A makes changes and submits the page
• Person B clicks the "Next" button
• Auto-save kicks in, which submits the original page data
• This results in over-writing the changes Person A made

We have implemented some features and steps you can take to help to prevent accidental over-writes.