The Schematics tab is the spot where all the Schemas from leveling up are stored. You are able to craft things from this list if you have the required items in your inventory at the time. This part of the inventory is the entire right side of the inventory.
Check this section out on the desktop for an interactive schematics list!
Currently Available Schematics (Work in progress)
Hover over a schematic to see what is needed to craft it
Searchable on the desktop!