Users can control both the number of items in a Cover grid and the number of rows those items display in. Or the user can allow the Platform to automatically display the number of rows.
To navigate to these settings, select an existing Cover or create a new one, and click the Layout button.
Then find the Grid option and check the box to select it.
Click the Save button.
Now that Grid is selected, find the options on the right that allow for control over grid item display.
Change the Max Items Per Page field to the number of items to be displayed.
If you wish to allow the Platform to control how the items display on the cover, leave Automatic checked.
Click the Preview button to see how the items will display.
The Platform may display the items in multiple rows, depending on the size of the viewer's display.
To control the number of rows the items appear in, use the Fixed field.
Click the Save button. Then click the Preview button to see the changed display.
The Platform will display the items in just this set number of grid rows.
For more about Covers, read this document: Title Type: Cover
Watch MediaStorm Founder Brian Storm discuss this feature: