To add an element to the library, you start by adding an element with which you start your design.
By selecting the element and using the tools in the bottom you can modify the element to your needs.
Click "PodoCAD - Insole" in the menu bar, "Library" and then choose what you want to add: one element ore multiple elements.
Choose a name and Click "ACCEPT"
Your new element has now been added to the library.