You can allow your customer to upload their own font in .TTF format for adding text.
Steps to Enable Font Uploads
1. Open Impact Designer Admin.
2. Click “Print Method” in the navigation panel.
3. In the Print methods page, select your print method and click “Edit”
4. A new page will open, and scroll down to find the Text settings. Enable the checkbox of Allow user to upload fonts.
5. Click “Save”
You have successfully enabled users to upload their own fonts!