For a more in-depth article, please refer to https://lido.mixbytes.io/docs/guides/unstake-stksm.
After having staked KSM, you can unstake your stKSM back for xcKSM through Lido. Please note: there is a 7-8 day unbonding period. Users will be able to swap stKSM back for xcKSM through integrated AMMs to bypass this unbonding period.
Head over to kusama.lido.fi.
Connect your wallet.
Select the "Unstake" tab.
Input the amount of tokens that you would like to unstake.
Confirm the transaction in your wallet.
After the unbonding period is over, you will be able to manually claim your xcKSM through this widget by selecting "Claim".