Here are several videos that include demonstrations and tests
https://drive.google.com/file/d/1W4OhmdNPI2-OZ6ajyQveys7wNAqoGq-3/view?usp=drive_link
https://drive.google.com/file/d/1yPcApl4WuaN9l5vVZ2RVA-vfgjUvnrUt/view?usp=drive_link
https://drive.google.com/file/d/148dqecIa86VHFZU3SGwEt5DQamI_PgXS/view?usp=drive_link