If you have a special font that you want to be able to use in your showcase hotspots here's how:
Simply upload a .ttf file of that font to the 'Fonts' folder in your showcase File Library.
This folder is standard in all showcase workshops:
IMPORTANT: The 'Fonts' folder must stay one level under the main 'File Library' folder - if you move the Fonts folder to another sub-folder, it won't work.
Once your font is uploaded, you can choose it from the drop-down list of fonts when editing a Hotspot. Select your hotspot, or create a new one, and choose 'Text' from the list of options at the right.
You can also set this custom font as a default font to be used for all new hotspots you create. This is done via the Hotspot Settings.