How do I add vias during routing in Altium?

You can add a via during routing in Altium using either the asterisk key (*) or a combination of Ctrl+Shift and the mouse wheel.

Here's how to use each method:

• *Using the Asterisk Key ():**

  1. While routing a trace, press the * key on the numeric keypad.
  2. Altium Designer will switch to the next available routing layer and automatically insert a via.

• Using Ctrl+Shift + Mouse Wheel:

  1. While routing a trace, hold down the Ctrl and Shift keys.
  2. Scroll the mouse wheel up or down to cycle through the available routing layers. Each click will move you one layer.
  3. A via will be automatically inserted when you switch layers.

Both methods offer quick and efficient ways to change layers and add vias while routing in Altium Designer. Choose the method that best suits your workflow and preferences.