I really need to create two additional tables for one entity. In first I will be saving full history which is emplemented in evers lib and in other one I need to keep track only in certain cases. Can I just extend some of evers classes to create additional table or should I just starting developing additional service for it in my project?
no, this is not currently possible. Maybe you can store all historical data just in one table, and retrieve the data that you would like to store in the second table using queries?