The short answer
Copy trading means that when a trader you choose places a trade, the same trade is placed in your own brokerage account, scaled to the amount you set aside. You don't have to watch the market or place orders yourself.
Where your money stays
On CNKTID your money never leaves your own brokerage account. You link the account by signing in on your broker's page, and CNKTID can only place and close trades there; it can't withdraw money. TastyTrade is the first supported broker.
How sizing works
You choose a dollar amount, a percentage of your account, or both; the smaller one wins. Options trade in whole contracts, so a small allocation may round down to zero contracts and that trade is skipped. Before each new trade, your broker's real buying power is checked.
Staying in control
Co-pilot mode lets you approve each new trade before it is placed; Autopilot copies automatically. You can pause, stop, or stop and close at any time, and every copied entry gets a take profit and stop loss.
The risks
Copying a trader doesn't guarantee their results. Your fills can differ, trades can be skipped, and you can lose money, especially with short-dated options. Past results don't predict future results. Read the risk disclosure before you start.