Step1: Create meeting Room
Step2: Each room have some tools attached to it. 1st tool with camera icon reads 'Record Session'. Click on it.
Step3: Turn ON the record button and start recording.
Step4: To disable the screen showing your picture, click on the 5th tool. With this screen with your picture will be disabled.
Step5: To enable back the front camera, click again over the indicated tool and with this screen with your picture will be enabled again.