How to trigger a journey manually by applying the trigger tag

video1.0<iframe src="https://www.loom.com/embed/aeba1f218b7b456d9f4d892f3e3a0388" frameborder="0" width="1122" height="841" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>8411122Loomhttps://www.loom.com8411122https://cdn.loom.com/sessions/thumbnails/public/aeba1f218b7b456d9f4d892f3e3a0388-with-play.gif102How to trigger a journey manually by applying the trigger tag