Commentics can be heavily customized just by changing the settings in the admin area.
As an example go to 'Settings -> Layout -> Comments' and you'll see some of these. Use the 'Positions' setting to assign any of the enabled features from lower down on the page. Also see the 'Settings -> Layout -> Form' page.
The 'positions' setting
Even so, sometimes you'll still need to edit the files. The rest of this documentation aims to help you with that.