Type and search Sound settings in the Windows search bar (1), then click Open (2).
On the input device filed, select the microphone device you want to use (3).
You can use the slider bar to adjust the microphone volume (4).
Some applications or services may ask the microphone authorization for the first time, and you also can set up which apps are allowed to access your microphone via the following Windows settings.
Type and search Microphone privacy settings in the Windows search bar (5), then click Open (6).
Turn on Microphone access (7).
Turn on Let apps access your microphone (8).
Expand the Let apps access your microphone filed, here you can turn on/off which apps can using microphone (9).