He are tutorials on the microphone system in your classroom. 

Pick which microphone looks like yours.

Microphone accessories

How do i change the volume on the teacher and student microphone

Microphone volume can be changed directly from the Teacher Microphone. Use the “Select” button to choose which microphone you want to adjust: “Own” will control the Teacher Microphone, “Other” will control the Handheld Microphone. Once you have selected the appropriate microphone, adjust the microphone with the up and down arrow buttons. When your volume is correctly adjusted, you shouldn't be able to hear yourself through the classroom speakers. 

How to play audio through your TIP computer using the microphones. 

Instructions on changing the volume on the teardrop and handheld are in the video above.