India specific localization/Taxes

Summary:

Need to understand the pre-requisites system setups for India Taxes/Localization that would need to be performed on the instance (in addition to the features enabled at opt-in)

Content (please ensure you mask any confidential information):
Currently the implementation is completed in UK country and now the client is rolling out in India; need to understand the pre-requisites system setups that would need to be performed on the instance. At this moment, we have enabled the below features at Localization.

What are the other checkpoints that need to be performed to get India taxes working on the instance ?

Version (include the version you are using, if applicable):