When it comes to timelines and Gantt charts, appearance matters. The whole point of creating a chart in OnePager is for it to be a visual project report. In addition to colors and shapes, the font you use can make a big impact on the overall look and feel of your chart.
The first step in adding a new font to OnePager is to add it to Windows. Microsoft has put together detailed step-by-step instructions on how to do this:
Add a font – Microsoft Support
After you have added the font(s) to Windows, launch OnePager and go to Chart Properties. Open any form that has a font control. In this example, we will change the Task Label to a custom font called “KG Chasing Cars.” Once you have selected the font, click OK and OK.

You will now see in my chart that my imported font is currently used for the Task Labels, which gives it a fascinating look.

If you click the Add a font – Microsoft Support link above, it will provide you with some recommended sites where there are an endless variety of fonts that you can use to make the OnePager chart your own.