You need to create a Gallery Page and be on the Gallery Page to perform Gallery Page Settings.
Note: When you create a Gallery page, Please select the Gallery Page template in the page attributes to get predefined Gallery template.
How to Create a Gallery Page?
- Go to Pages> Add New
- Enter the Page Title and select the Template as Gallery Page
- Click on Publish
How to Configure Gallery Template?
- Go to Appearance> Customize> Gallery Page Settings> Gallery Template
- Enter the Button Label
- Click on Add a Widget
- Select Text Widget for title and description of the section
- Enter the Title & Description
- Again, click on Add a Widget
- Select the Gallery Widget
- Enter the Gallery Title and click on Add Images
- Upload the images and click on Create a New Gallery
- Select the size as Gallery Image from the drop-down
- Click on Insert Gallery
- Click on Publish