You can easily design covers for your publications in Webmag. Simply create a new article by using the "Cover" template and select the suitable template from the snippet bar.
Some cover snippets come with the option of teasing individual articles in your publication. To adapt these "featured articles", please open the cover snippet settings and in the field "Add Internal Link“ select those articles which you want to show on the cover. You can adjust the teaser texts manually. Note: If you create the cover first, you will of course not be shown any articles yet. From the moment you have created articles you will be able to link them in the cover.