Access / VBA module

We need a programmer to implement a module for our access project. It's supposed to filter data records in a table. The records consist of a number of articles. The same article can exist multiple times with different attributes. If all articles with the same article ID have certain attributes the articles have to be categorized in one category. There are four categories with a corresponding set of attributes: cat1=all articles with the same ID have attribute a1 cat2=all articles with the same ID have attribute a1 or a2 cat3=all articles with the same ID have attribute a3 cat4=all articles with the same ID have attribute a1 or a2 or a3 (remaining ones) The articles have to be sorted into the categories one after the other (so category 4 mustn't contain all articles but only those not yet categorized). Example: article id | attribute 1 | a1 1 | a1 1 | a2 2 | a3 2 | a3 2 | a3 cat 1: none cat 2: all records with article id 1 cat 3: all records with article id 2 cat 4: none The module should either be implemented in VBA or using queries. We estimate the time necessary to implement the module to be about 2-3 hours for an experienced programmer. Receipt of payment after the code has been reviewed by us.