Hi there, custom boxes, which are called filters in Doit.im, are boxes that can be defined with various filters by users. Now they can be added on the web version and the mac version, and viewed on all the platforms we support. To add a new filter on the web version, click “Advanced” next to the search box in the header. At the filter dialogue you can put in information like the status of the task, priority, a deadline, the context or project. By clicking “+” /”-” on the right, you can add or minus a filter condition. You can even sort and group the tasks by a number of attributes. After you have set all the filter conditions you can give it a name and save it. Please click the link below to learn more: http://faq.doit.im/web.html#111