That’s as in:

493B95DD-4131-4FCC-A002-85A5A4E90485.jpeg

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For anyone else who might have missed this.

Not altogether ‘intuitive’ but, once pointed out, it’s something I’ll work with very happily indeed.
My interpretation of the UI was that selecting the move icon rendered the waypoint moveable by ‘picking it up’ and moving/placing it by hand (well, finger!).