If the Gallery isn't visible, press Gallery 
.
Select My Content (or one of its subcategories) in the Gallery's category list, press its menu arrow, and then select Add to My Content.
SMART Notebook 10 for Mac Operating Systems
You can add a file to the Gallery's My Content category so that it's available in a convenient location, if SMART Notebook supports its file type.
NOTES
You can also add pages and objects from the current page to the Gallery.
You can organize the My Content category to include subcategories.
If the Gallery isn't visible, press Gallery .
Select My Content (or one of its subcategories) in the Gallery's category list, press its menu arrow, and then select Add to My Content.
The Open dialog box appears.
Browse to and select the item you want to add to the Gallery.
Press Open.
NOTE: By default, SMART Notebook names the new Gallery item based on the original file name. If you want to change the item's name, select the Gallery item's thumbnail, press its menu arrow, and then select Rename. Type the item's new name. If a connected keyboard isn't easily accessible, type the name using the SMART Keyboard.