Linux version - Part Library Editor - can't write to libraries

Hello All,
Just love this software and it runs well on Linux Mint.
I have one question though … I can’t add parts to existing Library … like Microchip
because folder it is in /usr/share/kicad/library/microchip.lib is owned by ‘root’ and only opens as ‘Read Only’.
How do I fix this without making new microchip PICs in a project library?
Thanks