The most useful feature is that it allows you to quickly create proposals which are then easily submitted online via our CRM system, where they can be reviewed at anytime from anywhere in an efficient manner without having access or needing internet connection! Easy for my team as well since I don't have any technical knowledge required (aside of uploading documents).
It's easy enough if your not tech savvy but there might also need some training when using this product initially so make sure someone who knows what their doing helps set up these templates/forms etc before hand. This has allowed us more time than we would've had otherwise just sending emails back & forth about how many times each person needs signatures / approvals ect.