In Twitter you can make Twitter lists. A Twitter list is a curated group of users you want to follow. Creating these lists in Media Injection is not possible. These need to be made in Twitter. However, you're able to load the lists that are attached to the Twitter channels you added in your brand. The 'Messages from lists' stream isn't in the standard dashboard, but you can either edit one of the existing widgets or add a new widget. Selecting 'Lists' under widget type will open an empty Twitter list widget. Under filters, you can choose one of the pre-created Twitter lists.