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Below is /etc/sudoers.d/Update, it allows installs of software via the cli without a password.

/etc/sudoers.d/Update

## Installation and management of software
Cmnd_Alias SOFTWARE_UPDATE = /bin/rpm, /usr/bin/up2date, /usr/bin/dnf, \
 /usr/bin/rkhunter, /usr/bin/needs-restarting, /usr/bin/etckeeper, \
 /usr/bin/tig, /usr/local/bin/apt, /usr/bin/apt-get
 
%wheel ALL = NOPASSWD: SOFTWARE_UPDATE
%sudo ALL = NOPASSWD: SOFTWARE_UPDATE 

Create below in /etc/polkit-1/rules.d/10-my.rules and you won't get asked for a password by the system update software as much.

/etc/polkit-1/rules.d/10-my.rules

polkit.addRule(function(action, subject) {
    if ((action.id == "org.freedesktop.packagekit.upgrade-system" ||
         action.id == "org.freedesktop.packagekit.trigger-offline-update" ||
         action.id == "org.freedesktop.packagekit.*" ||
         action.id == "org.debian.apt.install-or-remove-packages" ||
         action.id == "org.aptkit.install-or-remove-packages" ||
         action.id == "org.freedesktop.packagekit.package-remove" ||
         action.id == "com.ubuntu.pkexec.synaptic" ||
         action.id == "com.ubuntu.pkexec.gufw" ||
         action.id == "in.teejeetech.pkexec.timeshift-gtk" ||
         action.id == "org.gnome.gparted" ||
         action.id == "org.nemo.root" ||
         action.id == "org.bleachbit" ||
         action.id == "com.linuxmint.mintsources" ||
         action.id == "org.debian.apt.install-file" ||
         action.id == "org.freedesktop.accounts.user-administration" ||
         action.id == "org.cinnamon.settings-users" ||
         action.id == "org.gtk.vfs.file-operations" ||
         action.id == "org.freedesktop.udisks2.modify-system-configuration" ||
         action.id == "org.freedesktop.policykit.exec" ||
         action.id == "org.freedesktop.udisks2.modify-device-system" ) &&
        subject.active == true && 
        subject.local  == true && 
        subject.isInGroup("sudo")) {
            return polkit.Result.YES;
        }
});