What is this Photo Sharer?
Here you can post as admin of your page a picture post and share this facebook internal url as your main account profil to selected groups.
So lets start loading pages.
Write your message and load the folder with the image(s). Select the image and the page(s).
Now load the groups your main profil is a member of. Select the groups you want to share the post to. Select the delay between posts. Click on Start!