set conditions on date field to calculate delivery date

b) When selecting Next day delivery option I only want customers to be able to select the next day from a calendar --ie Order before 1pm

Monday = Tuesday delivey
Tuesday = Wednesday delivery
Wednesday = Thursday delivery
Thursday = Friday delivery
Friday = Monday Delivery

c) When selecting 48 Hr delivery I want customers to see ; ie Order before 1pm
Monday = Weds Delivery
Tuesday = Thursday delivery
Wednesday = Friday delivery
Thursday = Monday delivery
Friday = Tuesday Delivery

Is there a way to do this please.

Since you want to calculate the dates based on today, I think calculating using a separate date field would help. Please check the following demo Jotform to see if that works for you.

https://form.jotform.com/212863480047961

As you can see from the conditions set, if today is equal to Thursday, set delivery for tomorrow.

From here, edit the conditions accordingly to your need.

It seems like this formula will work for Next Day Delivery (£10 delivery charge) -however I have no idea how to insert that calculation into our form.

But how will it work if the customer selects 48 hour delivery ( £5 delivery charge)

Hello there,

Simply copy my condition for the test form and apply it to your form fields.
For the 48h delivery simply set {today}+2 into delivery field