You need a Dollars MoCap product that can provide motion data to drive Dollars BELA, related products include,

• Dollars MONO
• Dollars DEEP
• Dollars VIVA
• Dollars MOTS

Please turn on Unity (VMC) streaming in the above products and make sure the port is the default value of 39539.

After launching Dollars BELA, you can bring up the UI options by pressing the ESC key.