If you see above only a grey box or have troubles while uploading, it could be that you haven't got the latest java run-time installed. Go to Java.com and download the latest version, or email This e-mail address is being protected from spam bots, you need JavaScript enabled to view it .  Otherwise, click the "Add media" button to the right.

After doing so, you should see a popup of your local file directory.  Navigate to the folder which has the photos you want to upload.  You can select multiple photos to upload all the photos in one step.  Here, I'm selecting just four photos for demonstration purposes.

After selecting, click the "Add" button in the lower right-hand corner.  You will see a thumbnail to the right of the photo about to be uploaded.  The popup will close, and the upload button (positioned beneath the 'Add Media' button) will be available. 

Now, click the Upload button.  You can see the second arrow indicate how much of the photo is left to be uploaded... when it has completed uploaded, you'll see "1 media uploaded successfully!" in the left pane.

Now, let's click "Photo Galleries" again under the menu link "NHF Community."  When I now click the link "Practice Gallery", I can see that a new photo has been added.