For a more in-depth article, please refer to https://lido.mixbytes.io/docs/guides/stake-xcksm.
After bridging KSM from the relay chain to Moonbase, users will be able to stake their KSM with Lido.
Head over to kusama.lido.fi.
Connect your wallet.
Input the desired amount of tokens that you would like to stake.
Select "Approve" to approve the transaction first.
Confirm the approval transaction in your wallet.
After approval, select "Stake" to initialize the staking process.
Confirm the staking transaction in your wallet.
Ta-da! You have successfully staked KSM with Lido.