You can find the shortcode under gallery preview.
Important! Shortcode must be inserted in a text editor page, and not in the visual.
You can also specify position of gallery on page by adding position parameter into shortcode.
[supsystic-gallery id=4 position="left"]
This parameter can have three values:
To find php code – on the left navigation menu click “Galleries”. Here, for each gallery written its own php code.
In general php code can be inserted at any place of the page code – to display exactly in this place, for example in the header or footer of the page. Besides it can be inserted in the code of template of the theme – to display on all pages.