Some tokens in the wallet can be staked. The staking tokens themselves will stay in the wallet, but they cannot be sent. The wallet balance will also show the quantity of tokens that are not staking. To send a staking token, it will need to be unstaked. (See the Unstaking section.) The minimum staking quantity each time is 1000.
Rewards are distributed on a block-by-block basis. Blocks are generated approximately every 1.5 days. (You can see the "Reward" in the wallet increasing.) To receive the reward, the user must request the blockchain to "receive the reward". This is because the rewards are not distributed automatically. Please note that Gas needs to be paid in order to "receive" the reward. Also, when staking or unstaking additional tokens, rewards will automatically be recieved. Accumulated rewards will revert to zero but please don't worry.
To send a staked token, it needs to be unstaked. However, after unstaking, the token will be in the "unstaking request" status for one epoch, which will prevent any immediate money transfer. This period is called the "lock period". Please note that unlocking a staked token will prevent immediate money transfer. The quantity to unlock can be selected (there is no minimum quantity).