1. Open the beauty camera application: locate and open the beauty camera application for which you want to set the hidden menu.

2. Enter the setting interface: usually you can find a "setting" or "setting options" on the main interface or menu bar of the application. Click or touch this button to enter the setting interface.

3. Find hidden menu options: In the settings interface, you need to find an option related to hidden menu or advanced settings. This is marked as advanced settings, advanced options, hidden features, developer options or something like that. Different applications use different labels to represent hidden menus.

4. Enter the hidden menu: after finding the relevant options, click or touch to enter. Some applications require you to perform certain operations or enter certain codes to enter the hidden menu. Beauty camera is an application that can beautify and edit photos in real time. These applications usually have various beauty filters, retouching tools and special effects to improve the quality of photos and make people look more beautiful when taking selfies or photos.