Question Add new button image?

[Shimei]

When creating a new button how do I add a new image. For example, if I want to add a "sad" button how do I add a picture of frown face that I already have? I have the image but couldn't find instructions. In the image folder I only see likes dislikes and thanks images.

Thanks,
William

 

[Shimei]

Please disregard as I figured it out.