This section of the documentation will guide you on how to create a Gallery.
Step 1 : Log into your WordPress Dashboard and navigate to Gallery > Add New
Step 2 : Enter your Gallery title in the upper field, and enter your Gallery body content in the main page editing box below it.
Step 3 : Choose a Gallery Format

Step 4 : Create or insert a new category for your Gallery

Step 5 : Upload an image for your Gallery

Display the gallery by creating a Gallery Page.