Material Icons and Material Symbols are free fonts by Google that allow you to add icons and symbols to text elements in your designs. 

You can find the full list of available icons and symbols here

To add an icon or symbol to your text box, simply type the name found under each symbol into your text box. E.g ‘search’.

Symbol or Icon names consisting of two words 

When a symbol or icon name consists of two words, you can add the icon or symbol by adding an underscore (_) between the words. 

For example, to include the ‘Check Circle’ symbol, simply type 'check_circle' into your text box and then press the enter key.