In Avada Builder, click the + Element button to open the Elements list. You can visually find the Gallery Element or you can type in the search bar in the upper right-hand corner to filter for the Gallery Element.
Once the Element is inserted into the page, you can now add your images to the gallery. You can bulk upload images by choosing + Bulk Add on the Children tab, or by using the Bulk Image Upload option on the General tab (this one has the option of dynamic content). Adding items in bulk is ideal if you have all your images ready to go. Upload your images or if they’re already uploaded, just select them from the Media Library (with Cmd/Ctrl click, or Shift/Click for contiguous images) and when you are finished, click ‘Insert Into Post’. Alternatively, you can add your images one at a time, under the Add / Edit Items options. Just click the + Add Images button and then the edit button on the item, or you can clone an image to retain its settings and then just change the image out.
Next, configure the settings which will style your gallery as desired. These settings are found on the General tab. There are options for layout, image size, number of columns and more. Please see below for a complete list of available settings and what they do, or checkout the Gallery Demo page for some great examples. There is also a Captions tab, if you wan to configure your Gallery to have captions.
When you have finished styling your element, be sure to remembr to save your changes.