Scheduled reminders in calendar

Ventura 13.7 on iMac

Trying to get Reminders to show in Mac Calendar.

Apple support (Use reminders in Calendar on Mac – Apple Support (UK)) indicates I need to "Select the Scheduled Reminders tick box in the calendar list".

However, the only calendars which appear in the calendar list are "Birthdays", "UK Holidays" and "Siri Suggestions". "Scheduled Reminders" does not appear in the calendar list.

Apple support also suggests when clicking on the "+" sign to create a new event there should also be an option to create a new reminder but I only have the option to create a new event, not a reminder. Everything works as intended on my iOS devices but of course reminders created on my iOS devices don't appear in Mac Calendar as the "Scheduled Reminders" Calendar cannot be selected and displayed. Also have same issue on my MacBook Pro, "Scheduled Reminders" does not appear in calendar list, so perhaps and issue with my iCloud profile?

How do I add the Scheduled Reminders calendar to the Mac calendar list?