We are designing a web-app for a community build out analysis and we want to get the public involved as part of the decision making process. The idea is to allow them to draw their own polygons for where they think the town should create new residential developments or redevelop existing dwellings, and then have them saved so we can look at them later and see what areas they repeatedly focus on. However, I'm not sure if any of the prepackaged widgets will perform this task for us?