How can I place stoploss orders using an AMO?
You will not be able to place stoploss (SL or SL-M) orders using AMOs. However, you can use a GTT order instead to place a stoploss during non-market hours.
Unless you choose to cancel, the GTT will remain valid for a year in case of equity orders and till the contract expiry for F&O.
You can learn more about how to place GTT orders in this article.