Variation of NthLargest - how to extract from a different field

Relative beginner with Crystal and 1st post here - please excuse if answer obvious:
I have 2 tables, one with static data describing contractors, the other with a table of rate history. So multiple rows per user, each with a start date and the corresponding rate.
I can extract the whole history easily enough but if I want to just show the most recent rate I have a problem:
For the most recent start date I can create a field and use the formula NthLargest (1, {rates.startdate} )
But for the corresponding rate, what do I do?
Mike

Group your data by contractor and sort start date descending.
Place all your detail records in group footer and suppress details and group header
Ian

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Hi,
If a field is hidden in SBIW-Maintain Datasources, am I right, that the delta does not collect those fields, or it is collected, just not sent to BW systems?
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Variation of NthLargest - how to extract from a different field

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