Firstly, this is an awesome plugin and I'm so glad you guys are moving to PA! Great alternative to the extremely overpriced Fabfilter Pro Q
![Razz :P](./images/smilies/icon_razz.gif)
As per the subject, and to further match the capabilities of Pro-Q, double clicking on either the left or the right side of the spectrum should ideally add a HP/LP.
Thank you!