BePro Listings works with buddypress; However, buddypress is not required.

Just to clarify, the “Gallery Slider” addon installs the same way as BePro Listings or any other plugin. There is no special installation place.

Once an addon is installed, it then gets put in the addons menu. If you found the options menu with the settings, the addon menu should be right below it in the navigation to the left.

Let me know if this helps