Within Commongreat Finance, consider there is a customer named Ash Barty (with a surrogate key of AB1) under Super VIP customer group S1 from 1^st June 2017, and later the customer is changed to group S2 effective from 1^st July 2022 with a new a surrogate key of AB2.

Task: Based on the given information, analyse the BI system requirement of Commongreat Finance and propose type 2 and type 3 slowly changing dimension (SCD) solutions for the financial institution. You must show all the relevant tables and values. Briefly explain your SCD solutions.