You want to make the gallery on Page/Post of your site? WordPress have it’s own gallery features, you can easily implement on your site page and post. Please follow the below steps to make the gallery.
1. Go to Page/Post
2. Add New Page/Post
3. Give the title of the Page/Post (Example: Gallery)
4. Insert the Media(Images) to the gallery.
If you still have the confusion, please post your query on support forum. http://www.acmethemes.com/supports/