Simon,

Thanks for the reply. I've figured most of this out now and managed to import my calendar settings from the PST file, which I no longer use as I have gone fully to IMAP.
I am still going to use Outlook (Classic) as New Outlook seems to be deficient, such as the inability to colour items on the Calendar.
I won't move to New Outlook until absolutely forced to (bit like not moving to Smart Meters). If it isn't broke, don't fix it.