Business cards have a front and back. In PrintJob we do this via Page 1 and 2. You can have editable stuff on both pages.
Actually you can have editable stuff on much more than 2 pages – the system can handle 30+ pages (maybe more – we haven’t tested – for practical purposes though, the documents you are making available for clients to edit have to be reasonably simple. Anything complicated, and you’re going to have user errors, typos, omissions etc. If you want to allow users to edit complex designs, you’d be better off giving them the doc and letting them edit it offline. (That’s my 2 pence)).
Here’s a picture guide to multi page docs.