The Shares Advised column on your Works or Payments indicates whether a publisher has registered a share for a book for a rightsholder who is your member: usually a writer or illustrator.
If the value is 'Yes' under Shares Advised it means their share has been registered and you will need to pass on that payment to the creator whose name will appear in the ‘Payment for’ column on your payment information. This is a ‘fixed share’ allocation that you should pass on in full to the named rightsholder.