1. Right-click the tag on the top right side of the screen to select the tags you want. (There are 4 types, blue and red, pause and resume)
2. Left-click a tag, and it will appear at the beginning of the timeline.
3. Drag the tag below the timeline to the position you want.
4. Once everything is set, click the "Play" button (top left side) to start the game.
I'm sorry for not explaining the gameplay clearly. Feel free to ask any questions!