You can use Tags and Sections together to not only sort the screens easily, but also help your team prioritize their work in Zeplin.
For example, you can have sections like Login and Browse that let you organize screens based on a feature in a project. You can then use tags like In Progress and Done to inform you of their status.
Tags can also be used to distinguish common elements you use like Popups, Dialogs; you can even use tags to assign screens to certain users on the team.
When you select a tag, screens within that tag will still be displayed under their sections, not breaking the visual separation.