Signing a document twice locks date field

Hi,

I have a document that needs signing and dating twice, the problem is that when the first person signs and dates the signature field it locks the date field of the second person who needs to sign and date, is there a way round this?

I've added the document to show the problem, it's the signatures on page 2, the partners signature date filed is locked after the delegates signature and date is added

Thanks In Advance

Paul Horsley