You can exit your smallcase by selling all the stocks in just one go or by selling only Partial stocks.
Whole Exit :
You can also have a partial exit with the smallcase. For more info on how to do this, please check here
Individual Stock Sell:
We also have the option to sell your individual stocks from your invested smallcase.
For more on this, Here is the article.
Exiting using AMO:
You can also place an exit order for your smallcase after the market hours using AMO. The order will be executed in the next market day between 09:00 AM and 09:14 AM (pre-market hours)
For more on how to place AMO orders, click here