- There’s a wait period (a few days?)—during that time, you could approve or deny. If you do nothing, access is automatically granted.
You use locktime. When you use locktime, it is either you use a block height or a certain time to prevent miners from adding your transaction in the blockchain until that time is over or your transaction will be mined after the specific block height that you set it to. You can read this if it suits what you want.
https://learnmeabitcoin.com/technical/transaction/locktime/