In the “Conversion” section, choose the conversion that optimizes for opt-ins to your lead magnet. This will be the pixel that fires when a lead visits the page that comes after they opt-in.
This conversion should be set to the next step in your funnel, the training page. This ensures that anyone who hits your training has opted into your lead magnet.
So the custom conversion would be /training or /elevate-training depending on the links that were provided for your funnel.