Want to see the mobile app in action? Check out this video here: https://youtu.be/6Ll6TzRYZWo
To add a new sign, tap and hold on your location plan. Depending on your settings this will either launch the camera, allowing you to take a picture, or will go to the sign form. From the sign form you may also tap on the camera icon at the bottom of your screen to add more photos to your sign.