The Running Text section comes with 2 tabs: General and Layout.
The Accent scheme can be selected between Main accent and Extra accent. To add content for the section, click on the section and insert content in the Text box. This content should be short. The recommended number of words is 3 but you still can add more than that.
To change the Slop style, click on the section and select one style from the dropdown menu. There are 3 styles: Up, Down and None. By default, the Up styling is selected.