You can modify the electrical plan in the same way as other elements of the plan, with the added ability to change the connections between various components (such as from a switch to a light fixture).

Each electrical element can be moved by clicking on it, and once selected, dragging it with your mouse.

To make a connection, for instance by clicking on the switch, the menu of the electrical component will appear.

By clicking on the "Add a circuit" option, you can create the desired connection. Simply click on the element you want to connect, and to exit the connection mode, click on the "Finish" button.