@Mike-and-Sharon0
You can find the weekend rate under... Listing > Pricing > Extra Charges
@Jeff158 's image is correct for UK but maybe different for Bermuda. It should be there somewhere.
We use the standard rate and weekend rate, then manually override them for peak holidays.
More of an annoyance is that we generally set a 3 night stay minimum as its not worth us doing 2 nights. At times it would be worthwhile doing 2 night stays but there is only a blanket setting for the minimum night stay setting and that applies to all your available dates rather than just specific dates you might like to offer.