The "Gallery Monklet" can be inserted into the content area of a page to display a specific photo gallery.

After you insert the monklet you will use the find_gallery tag to define which gallery to use.  The name of the gallery should be in slug format, which is the gallery name in lowercase with dashes in place of spaces.

eg. using the gallery labeled "Photo Gallery 1"  {{gallery-monklet|find_gallery="photo-gallery-1"}}

Detailed monklet help can be found at http://help.monkcms.com/article/using-monklets/