When you will Add a New Image or Duplicate the Last Image, you will see a bunch of settings/options related to that single image. Below is the explanation for each of that setting.
Image URL
Provide the image URL here, you can also use the WP Media Library by clicking the Media button.
Hover Effect
Select the hover effect here
Title
It will be used as a title attribute of the image tag. Square and Circle Effects will take it as the heading.
Alternate Text
It will be used as the alt attribute of the image tag for SEO purposes.
Caption
Provide caption text here, you can also use the rich editor to insert a caption. It should be plain text if you are using a circle or square effect. Shortcodes are also supported when enabled.
Width
Provide width for image Eg: 150px or 50%. Leave blank for responsive
Height
Provide height for image Eg: 150px or 50%. Leave blank for responsive
Caption Wrapper
Wrap caption in markup. Please select none if you are using an editor.
Caption Alignment
Wrap caption in markup. Please select auto if you are using an editor
Title Font Size
Size of title in px Eg: 20px. Only for Square and Circle Effects
Overlay Position
Choose caption overlay position here
Link To
Provide URL here or leave blank to disable the link
Link Target
Choose to open link in a new tab or same
LightBox
It will open above link in the popup on clicking
Animation Speed
Provide animation speed Eg: 500ms or 1s
Audio
Provide mp3 music to play on hover
Border Width
Provide border-width Eg: 5px, leave blank to disable border
Border Radius
Provide radius for border eg: 5px or 50%
Border Type
Choose border type
Shadow
Shadow for images
Title Text Color
Choose the text color for the title. Only for Square and Circle Effects
Title Background Color
Choose a background color for the title. Only for Square and Circle Effects
Caption Text Color
Choose the text color for the caption
Background Color
Choose a background color for the caption
Border Color
Choose the color for the border