Hi there,
try this:
1. Select the Headline Block and in Advanced > Additional CSS Class(es) add a custom class name eg. dual-font
2. Select the test you want in the second font and from the Toolbar > Down Arrow menu select highlight
3. Add this CSS:
.dual-font .gb-highlight {
font-family: 'font name here';
}
You need to make sure that this second font is added to the GP Typography system, and check the front end to see this change as the above CSS isn’t loaded in the editor by default