Many effects are automatable; some are not.
I also have SHS 6 and I just tried out the Sonitus EQ as a test. It is automatable.
Just select one of the presets (or create your own to use), click the W (Write) in the upper right corner of the Sonitus GUI, click Play and move the EQ balls up and down as the track plays. those movements are recorded in the track and the nodes created can be moved after the track is automated, if desired.
If your first test(s) don't turn out well, just click on the envelope line in the track and delete, then try again.
I forget where I got Sonitus, if it was included with SHS 6 XL or I got it somewhere else, but whatever effects you have and want to try automating, there should be a W or some other indication in it's GUI that it is automatable. In many effects and synths, clicking their GUIs and pressing the computer keyboard's F1 key will bring up it's Help files.
Good luck!