You can update the Style directly in the presentation. To achieve this, for example, you need to choose the font that best suits you, and with the right click of your mouse, click on Update Style Preset. An important fact to keep in mind is that the changes that you made while updating the Style preset are valid for the entire presentation.
Remember
The right-click option is a great way to access the specific configuration of a particular element. Check the infographic below to learn the keyboard shortcuts working with text.