Leafpad and PCManFM Policy Files (Lubuntu 18.04)

com.ubuntu.pkexec.leafpad.policy

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE policyconfig PUBLIC
  "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
  "http://www.freedesktop.org/standards/PolicyKit/1/policyconfig.dtd">
<policyconfig>

  <action id="com.ubuntu.pkexec.leafpad">
    <message gettext-domain="gparted">Authentication is required to run Leafpad as root.</message>
    <icon_name>system-run</icon_name>
    <defaults>
      <allow_any>auth_admin_keep</allow_any>
      <allow_inactive>auth_admin_keep</allow_inactive>
      <allow_active>auth_admin_keep</allow_active>
    </defaults>
    <annotate key="org.freedesktop.policykit.exec.path">/usr/bin/leafpad</annotate>
    <annotate key="org.freedesktop.policykit.exec.allow_gui">true</annotate>
  </action>

</policyconfig>

com.ubuntu.pkexec.pcmanfm.policy

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE policyconfig PUBLIC
  "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
  "http://www.freedesktop.org/standards/PolicyKit/1/policyconfig.dtd">
<policyconfig>

  <action id="com.ubuntu.pkexec.pcmanfm">
    <message gettext-domain="gparted">Authentication is required to run PCManFM as root.</message>
    <icon_name>system-run</icon_name>
    <defaults>
      <allow_any>auth_admin_keep</allow_any>
      <allow_inactive>auth_admin_keep</allow_inactive>
      <allow_active>auth_admin_keep</allow_active>
    </defaults>
    <annotate key="org.freedesktop.policykit.exec.path">/usr/bin/pcmanfm</annotate>
    <annotate key="org.freedesktop.policykit.exec.allow_gui">true</annotate>
  </action>

</policyconfig>