Confused on what this step is supposed to look like

https://preview.redd.it/ds3wsj8202yg1.png?width=1078&format=png&auto=webp&s=c823f4f7ce7242bd4d8a9fbc85b9fbf1cd043fec

I'm really confused on how to do this. So once I do the 6 chains, 4sc, then 3sc, I'm not sure what they mean by foundation chain? The only visuals I can see after the completed ones so I'm not sure if I'm even on the right track.

https://preview.redd.it/czhyboxp02yg1.png?width=769&format=png&auto=webp&s=d1209aa6e5186ce0dce407189754d2d34fcaf080