yourpassphraseis the user defined pass phrase, please remember it or you will lose your Hydra.
Setting-Encrypt Walletin the menu, as following:
yourpassphraseis the passphrase you set for encryption, while the second is the unlock time in seconds, here 300 seconds or 5 minutes, after which time the wallet will automatically lock itself.
truemeans you only want to unlock the wallet for staking only. After doing this, you can start staking, but other coin security related actions like sending Hydra or dumping a private key still require the passphrase to fully unlock your wallet.
For staking only, it means you only unlock the wallet for staking，but other coin security related actions like sending Hydra or dumping a private key are still locked. So please unselect
For staking onlyif you want to fully unlock your wallet. To unlock for staking only, you will also need to switch on the Staking button to activate staking as described below.
oldpassphraseis the current passphrase previously set，and
newpassphraseis the new passphrase you want set.