# Trade Setting **What are Gas settings and which one should I choose?** * You can choose from Market, Fast, or Aggressive gas options based on your need for speed: * Market: Match current market rate. In a volatile market, your trade submitted with this gas setting might take longer to confirm. * Fast: About 1.5x of the market rate. * Aggressive: About 2x of the market rate. **What is Auto Approval? Can I turn it off?** * Auto Approval speeds up transactions by handling token approvals automatically. This feature cannot be turned off to ensure smooth trading. * How it works: When selling an erc-20 token on-chain, you usually need to do two steps: 1. approve the token to the smart contract, and 2. The smart contract executes the trade. With Auto Approval, you will only need to click “Swap” once, and Candlestick will handle the token approval process for you in the back. **What is Default Spending?** * It is the preset amount your ETH will spend on future trades. It enables you to get the quote output amount faster because you no longer need to key in the input amount. You can always change the default spending amount. **What does it mean when I turn on “Required Confirmation”?** * Required Confirmation means that you'll see a preview of your trade which must be confirmed manually before it is executed. When turned off, your trade will be sent to the blockchain once you hit the “Swap” button. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.candlestick.io/faqs/trade-setting.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.