addons/google_calendar/security/ir.model.access.csv

   1 id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink\r
   2 access_google_calendar_all,access_google_calendar_all,model_google_calendar,,1,0,0,0\r
   3 access_google_calendar,access_google_calendar,model_google_calendar,base.group_system,1,1,1,1\r