How to send items to the Collection Book in Save the World?

To send items to your Collection Book:

1. Go to your Command tab in Save The World.
2. Select Collection Book.
3. Open the tab of the item you wish to add to the Collection Book (You can add Schematics, Survivors, and Heroes).
4. Select the item you wish to slot.
5. Choose Select item to slot.
6. In the window that shows up, click on the item that you currently have and choose Select,
7. Click on Confirm.
   Note: If an item is sent to the Collection Book, it will no longer appear on your Schematics, Survivors, or Heroes inventory. Only slot items you are not planning on using, or if you have a duplicate of them.