1. Launch the app.
2. Select the Video Source.
1) Only Audio.
2) Full Screen, as Duplicate Display.
3) One Screen.
4) Window
5) Region
6) Game

3. Select the Encode Source.
1). FFmpeg (Default)
2). GIF
3). SharpAVI
4). Stream
This article selects ffmpeg by default
4. Select the Audio Source.
By default, the app doesn't record the audio.

5. Record Webcam? If you need, you could check it.

5. Click "Record" to begin recording.
6. You could preview the recording when recording.