Briefly describe your issue below:
The option is grayed out.
What version of Parrot are you running? (include version (e.g. 4.6), edition(e.g. Home//KDE/OVA, etc.), and architecture (currently we only support amd64)
What method did you use to install Parrot? (Debian Standard / Debian GTK / parrot-experimental)
mate-desktop folks wanted me to post here for some reason even though it has to be upstream issue.