Man pages matching name html::formfu::element::checkboxgroup in section 3pm:

HTML::FormFu::Element::Checkboxgroup.3pm.en	debian 10 / libhtml-formfu-perl
HTML::FormFu::Element::Checkboxgroup.3pm.en	debian 11 / libhtml-formfu-perl
HTML::FormFu::Element::Checkboxgroup.3pm.en	debian 12 / libhtml-formfu-perl