1. If you are a validator, click ".." on the right of "My Stake" on My Account > Validator, and then choose "Stake More". 
- If you are a voter, choose "Stake More" on My Account > Voter.

3. Enter the amount of BTT to be staked and then click "Stake".

4. After clicking on "Stake", click "Accept" in the TronLink Signature Request pop-up window to confirm the action.

5. Once the signature is confirmed, wait until the transaction is recorded on the chain to complete the action.
