1. There are two solutions:
1) Each flash with one Tric device: Up to 4 devices can be connected through paid app TricCam. Free TricCam Lite can only connect to one Tric device.
2) Use only one Tric device to master flash, and set other flash units to optical slave mode.
2. It is required to use our app to trigger Tric device. Other apps cannot trigger it.