There are two ways we can get exemptions one is configure V_T7INI* series tables where we can define sections and sub sections and exemption limits.
The other way is we can configure a deduction or investment component for IT0057 and same can be assigned for section 80 exemptions.
Mainly what we have to do is concentrate on V_T7INI* series tables, you will get an idea.
Regards
Venkatesh