To create a new project, first go to the "File" which is located at the top-left side of the interface. Then, click on "New" and select "Project" to create a new blank projecct for our design work.
Now, a dropdown list of created project files is open. Click on "New" and select the "Schematic" to design the connecction diagram. Here, a new window is opened after hitting on "Schematic" option to design the PCB Schematic.
To design the PCB schematic, I have installed some libraries (connectors, resistors, switches, microcontroller,etc.) just by opening the library manager and adding the required libraries into the software.
After the library installation process, I inserted all the electronic components that I want to use for my Final Project by typing "add" + Enter on command line at the header.
Here, I inserted XIAO-ESP32-C3 microcontroller using the same above process. Likewise, I inserted resistor, 2 pin connector, 4 pin connector in my schematic.
Now, only "top" layer is visible. Go to "file" located at the header, click on "export" and select "image" option. And export the image as per your required settings includes resolution, monochrome, area, etc.
Now, I used MIT Mods CE to generate GCode of image for PCB Milling process by inserting required parameters such as tool diameter, depth of cut and offset nummber.