Welcome to the forum- always good to see new members!

it works for selecting a date for a new entry, but it wont select a day of work from the calendar, can i not do that?
Are you saying that the calendar control is not allowing you to select a past date?

Where i've got Pay - PAYE i need to save that to my table field 'pay' when all the other fields save but currently it has the equation for - tax in the Control Properties, any ideas on how i can transfer it to my table?
I don't understand this question- what are you wanting to do here? What are you needing to add to your table?