Search help enhancement for product category( same functionality as Unit of measure)

Hello,

We have a requirement to enhance the product category F4 help while creating the shopping cart.

The product category should have an option as "save to personalised list" ( Which is available for unit of measure) to add selected product categories to list and display only that list.

If user changes and adds some more to personal list, then the new list to be displayed. ( Exactly same behaviour of Unit of measure).

Please let me know the feasibility and some light to achieve.

Thanks in advance.

Regards,

Sai