signaldctl group add-member
add a member to a group
signaldctl group add-member <group id> [<new member number or UUID> [<new member number or UUID>...]] [flags]
-a, --account string the signald account to use
-h, --help help for add-member
--config string config file (default "~/.config/signaldctl.yaml")
-o, --output-format string the output format. options are usually table, yaml and json, default is usually table. Some commands have other options. (default "default")
--socket string the path to the signald socket file (default "/var/run/signald/signald.sock")