The CamRanger Share application is only compatible with the original CamRanger and not the CamRanger mini.
Only a single device (tablet, smartphone, or computer) can control a single CamRanger at one time. However, multiple devices can receive thumbnails, pictures, and the live view stream with the separate CamRanger Share application.
Within the normal CamRanger application, sharing can be enabled and configured. The photographer has complete control over what is shared and if it is shared automatically for all images, or just select one. So a common workflow could be the photographer using the normal CamRanger app on a tablet and automatically transfer images to a computer running the CamRanger Share application. The photographer can use the CamRanger normally while wirelessly tethering to the computer.
This video demonstrates the setup and basic use of the CamRanger Share application: https://www.youtube.com/watch?v=bmR-Kd1valY