It should be possible to declare your own section like this one.
@rulespec_group_registry.register
class RulespecGroupIntegrateMyCompany(RulespecGroup):
@property
def name(self):
return "company_checks"
@property
def title(self):
return _("Company services")
@property
def help(self):
return _("This services are provided by so called company checks. ")
For sub groups the definition looks a little bit different but it should also be possible.