In a note which is attached to a date how do I set a follow up to another date/meetings?
You can create a new note for the follow up event and link to this note using Agenda links (see Note > Link To)
I don’t see agenda links or note options.
Is this only in the Mac version?
On iOS the ability to create an Agenda link can be found in the gear menu at the bottom of the Note (after tapping Copy As). The next update will make it even easier by tapping the plus button followed by the link icon.