Update table from calculate combo box?

[needlotsofhelp]

Dear Access Helpers,
I am a new user in need of help please!
I have a form based on a table called Training, on which I track training events accomplished and due.
I have a dateaccomplished combo and a datedue combo.
I am calculating the date due by putting =dateaccomplished+365 in the Control Source of the datedue combo box. My calculation is displaying the correct duedate on the form , but my duedate data is not being saved to the underlying table. The dateaccomplished does show up on the table. I need both to save to the table because I base reports of the table.
Will someone please help me? Any and all suggestions will be greatly appreciated!

 

[RichUK]

Storing calculated Dates is considered bad practice, it can be calculated at any time using a query or calculated control on a form/report to display it.

 

[needlotsofhelp]

Dear RichUK,
Thanks for you advise. I am learning a lot just by reading the forum posts! I am not too familiar with queries. How do I go about it?