WordPress Dashboard >Pages > click on add new
First, you have to create a gallery page from WordPress dashboard > Pages > click on add new and create a gallery page and select gallery page template from the right side of your page you have to select gallery page template from the template list, you can see two types of gallery page template both are in different style select one.
WordPress Dashboard > Appearance > Customize >Page template > click on gallery page
On the gallery page you can see the Header from there you can add the title & description.
WordPress Dashboard > Appearance > Customize >Page template > click on gallery page
On the gallery page you can see the content from there you can manage content in gallery.
WordPress Dashboard > Appearance > Customize >Page template > click on gallery page
On the gallery page you can see content from there you can add button label, and gallery column.
