Currently if a filter is left blank it's treated as an "ALL". In many cases we don't want it to return all results due to the volumes it might return which could crash the web form. This request is for the ability to choose which filters are required for each web form. The web form would make sure all "Required" filters are set before loading the page. In addition, there should be the ability to set a default filter value similar to how presenter allows you to define the web user or another default value.