To use Realtek Audio Manager in Windows 10, you need to access it from the bottom panel. If you are unable to access it from there, then you can go to this location on your computer and open the exe file.
Once you open the program, you will have two tabs, Speaker and Microphone. Both of these tabs are used to change the settings of the various elements of the audio of your computer. You can control speakers as well as a microphone from the tool. It is a fun tool; you can play with it as long as you want.
Also, Visit More: Reinstall Realtek HD Audio Manager