Right now it's not possible to add the Auto charges price component to a price tree. It can only be used in the base price tree.

As mentioned in this engage post https://www.yammer.com/dynamicsaxfeedbackprograms/#/threads/show?threadId=3226711020036096

This would be a very useful addition . Let me give an example. When you have a large company with a lot of intercompany customers often the whole pricing structure differs from regular customers. Or when selling into different regions all over the world. In that case it would be very use full to steer the pricing trees based on the order attribute and applying a different charges.

In addition it would be very beneficial to steer the order attribute based on a customer attribute or field of the customer