How do you make mario kart world style intermissions?

hi, im just wondering how you use the lap overrides to make it so you can make an intermission track like mario kart world

Can you be a bit more specific?

so you start with the actuall intermission, and for the last lap, you do a full lap of the destination track

Here is a simple track that I made JUST for this topic, IDK what you can learn from this but if you have questions, I can answer them.
https://mkpc.malahieude.net/map.php?i=217265&collab=vLTnV1kW5ECEc2NouR5J_Ipj

thx that helped alot!