1. First, you need to install an oil monkey script manager in your browser. Search and install in the app store of the Lemur browser, or download and install from a reliable source.

2. Secondly, after installing the oil monkey script manager, go to the oil monkey script official website to browse and select the required script. After selecting the script, click the Install button to install it in the browser.

3. Then, after installing the script, you need to enable it to make its function take effect. In the Oil Monkey Script Manager, find the script you just installed, select the Enable check box, and then click the Save button.

Finally, once the script is enabled, it will automatically load and start running. Use the functions provided by scripts in the browser, such as automatically filling in forms, intercepting advertisements, and realizing shortcut operations.