Regarding your request with the arrows, the theme currently loads up the arrows by default regardless the number of slides. To be able to control the arrow display shown only for multiple slide active you will need to make some code changes through Child Theme Approach.
After creating and activating child theme manually or with a plugin, paste in the following code block in your child theme’s functions.php file :
This will add the theme functionality of removing the arrow when single slider is added in the theme.
The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.