Waardering 1 van 5 sterren

Hi, I'm a recent user of Linux and have been very happy with Thunderbird email as a replacement for Outlook client. I miss Google Calendar and have installed the Gnome calendar but can not get it to sync in both directions. I was pleased to come across the Google Calendar add in for Thunderbird and have downloaded and installed it. It appears in the add ins manager. BUT I cannot see how to fire it up! I was expected a link in Thunderbird or for it to be in the LInux Mint app list but it's not there! Can anyone help?