From the navigation, near the upper right-hand corner, click the 3 vertical dots to open the drop-down menu and select “Showcase”.
From the Showcase page, click on “Add item” in the right-hand corner. A popup will appear with an option for categories, select one, then you will be brought to the Add item editor. Here you will want to enter all the details for your showcase, including Title, tags, description, etc. For the cover image you wish to display for your showcase, you will go to the “General Information” text box, and click on the “Insert image” icon at the bottom of the editor.
Add any additional item details, and “Save”.