Auto Assigning catalogs/categories based on item classes

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Hi All,

We have more than 100 item classes and 5 different catalogs with different categories associated with them. Out of those 5 catalogs, couple of them are assigned as functional area catalogs. We would now like to have these catalogs auto assigned while creating items.

The category to be auto assigned based on item classes can be different from the default category which is available in functional area catalog. 

We would like to understand couple of points mentioned below.

1. Is it possible to auto assign catalogs/categories of functional area catalog based on item classes with categories being different based on item classes? We would like to achieve this without business rules (Manage item rule sets).