Step 1: Create a New Component
Step 2: Schematic Symbol
You can use an existing symbol by selecting one from the gallery, and it is even possible to edit these symbols (in this case you actually fork the symbol). But we're going to make one from scratch: click on "Create New".
You can draw your symbol with the pen, rectangle, circle and text tool. When that's done add the terminals. These are special symbols not shown in the schematic, but used by the tool to know where wires can connect.
When done, give it a name and click "Save and Add Symbol".
Step 3: Footprint
Open the footprint view and click "Add Footprint". Here again you can select one from a large collection of industry standard footprints (which you can the fork and edit) or you can create a new one. We'll create a new one for this instructable: click "Create New"
Click the cross in the middle to change the pitch of the snap grid. Add pads and silkscreen using the various tools. We support SMD pads and through hole pads.
When you're done, give it a name and click "Save and Add Footprint"
Step 4: Pin Mapping
First switch to the Mapping view. Click on a symbol terminal you want to map. Now click on a pin on the footprint to where you want to map. The tool will now auto-select the next terminal so you can just keep clicking subsequent pins. You can also start the process from the other side, and first select pin before you map the terminal. It is also to mark a pin/terminal as not connected using the button at the bottom.
When done, hover over all the pins to check if the mapping is correct.
Note that you can add multiple footprints (such as SMD and through hole) to a single component by repeating the last two steps.
Step 5: Final Steps
Step 6: Using Your Component
Search for it!
If you edit your component all the schematics that were using your component will still use the old version.