Man pages matching name gpasswd in section 1:

gpasswd.1.cs	debian 10 / passwd
gpasswd.1.de	debian 10 / passwd
gpasswd.1.en	debian 10 / passwd
gpasswd.1.fr	debian 10 / passwd
gpasswd.1.hu	debian 10 / passwd
gpasswd.1.it	debian 10 / passwd
gpasswd.1.ja	debian 10 / passwd
gpasswd.1.pt_BR	debian 10 / passwd
gpasswd.1.ru	debian 10 / passwd
gpasswd.1.zh_CN	debian 10 / passwd
gpasswd.1.cs	debian 11 / passwd
gpasswd.1.de	debian 11 / passwd
gpasswd.1.en	debian 11 / passwd
gpasswd.1.fr	debian 11 / passwd
gpasswd.1.hu	debian 11 / passwd
gpasswd.1.it	debian 11 / passwd
gpasswd.1.ja	debian 11 / passwd
gpasswd.1.pt_BR	debian 11 / passwd
gpasswd.1.ru	debian 11 / passwd
gpasswd.1.zh_CN	debian 11 / passwd
gpasswd.1.tr	debian 12 / manpages-tr
gpasswd.1.cs	debian 12 / passwd
gpasswd.1.de	debian 12 / passwd
gpasswd.1.en	debian 12 / passwd
gpasswd.1.fr	debian 12 / passwd
gpasswd.1.hu	debian 12 / passwd
gpasswd.1.it	debian 12 / passwd
gpasswd.1.ja	debian 12 / passwd
gpasswd.1.pt_BR	debian 12 / passwd
gpasswd.1.ru	debian 12 / passwd
gpasswd.1.uk	debian 12 / passwd
gpasswd.1.zh_CN	debian 12 / passwd