How can I add a frogport here

https://preview.redd.it/0awhrgesdvye1.png?width=2880&format=png&auto=webp&s=00f03f7caa2fe0082d59d0702fc2199bd4497149

I built this cobblestone farm from this https://www.patreon.com/posts/advanced-mk-5-126376761 and I want to connect it to my iron farm, but I don't know where to add a frogport. Btw I don't really understand how anything in the new update works, so if anyone could help it would be great.