Hi robert,
In drdel's step-by-step, "OR" stands for outer ring. So click on the outer ring segment until its opening is at the six o'clock position.
His labelling for the other rings is:
Centre outward: 1R, 2R, 3R, 4R and OR (for outer ring)
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"Bleat, Watson -- unmitigated bleat!" ~ Sherlock Holmes