Send from Network Chests to Network Loaders
I am sending it from Loaders to Chest again, but I don't know the shortcut to change Loaders. First, I can't do R.

When using Network Loaders I usually follow these 3 steps:

1. Before placing the Network Loader, press "R" to rotate the ghost of the loader so the belt points to where you want to loader to connect to the belt.
2. Place the Network Loader.
3. Press "R" to change whether the Network Loader inserts items into the chest or retrieves items from the chest.

Does that help or are you stuck on something else?

I want to do it like the first picture of Overview, but I can't
I want to post a picture, but I don't know how to post it
If you don't mind, could you watch the YouTube video?
https://youtu.be/TVFhsWz98s4
No matter how hard I try, I can't.

I did it step by step and it was solved
Thank you.
Thank you so much