Thanks Jason. It works well on this exercise site.
But now I want to use my new knowledge to my own projects.
In this project there are three multiple choice boxes and four radio-buttons.
I suspect it is not as easy to use 'Insert Multiple Records' function and the 'Manage Relational Table' here!
The result is that the radio-buttons are saved correctly in the corresponding 'items' table. But multi-choice boxes are not saved in the corresponding 'itemgenres' table - there is an error message when I press' Insert'.
I have created three columns in the corresponding 'itemgenres' table. These relate to the three multi-choice boxes on the 'update'-page. Here I had to create 'Manage Relational Table' 3 times, which seems strange?
On the Insert page I have also created 'Insert Multiple Record' 3 times. Could it be this that messes with that?