How to add custom fonts in Figma Jam

Hi there. I am new to Figma. I want to add custom fonts to my Figma Jam files, but I do not know if this is possible. Therefore, if it is possible can anyone help me figure it out how to do that. Thanks.

Install the necessary fonts into the OS:

Then you can change the font of any text objects in Figma and FigJam files using the Change Font plugin: