Ok, cool. What i found out. The plugin uses animate.css, so the css-class comes into the advanced-tab, css-class in the toolbar.
So, if you choose the right css-class (find on https://acchou.github.io/html-css-cheat-sheet/animation.html) the plugin reacts on that.
For example: Toolbar – Animation – Slide in right, makes the css-class – animated slideInRight
To change the behaviour – change the css-class to – animated slideOutLeft