Currently Being ModeratedJul 1, 2013 12:07 PM (in response to crispinfromab)
Welcome to Apple Support Communities. We're all users here.
You absolutely don't need a CalDav account to create local To Dos. (More info on CalDav here: http://www.imore.com/how-add-caldav-accounts-and-calendar-subscriptions-your-iph one-and-ipad)
I created a ToDo list attached to my personal iCal calendar and stored it locally 'On My Mac'.
As you can see in my iCal preferences, there is no CalDav account listed.
There are a couple of steps involved.
In Mail, Preferences, Composing be sure you've selected 'Create notes and to dos On My Mac'
Now in Mail, in the left column, go to the tab titled REMINDERS, and if necessary click the down-button to display Notes and To Dos.
Now the To Dos icon in the toolbar should be active.
Once the To Do is created, you can click on the fields in the columns to edit Due Date, Priority, and Calendar
Currently Being ModeratedJul 3, 2013 4:19 PM (in response to kostby)
Thank you very much. This resolved my issue and was very straight forward to implement. I'm still curious about why the message "The To Do Calendar is unavailable to you until you add the selected account to iCal." showed up when I passed the cursor over the greyed-out To Do button in the task bar. Nevertheless, I really appreciate your help ...that's what community is all about. Cheers!