You can edit and manage your icons sets under Listing Types Icons Sets.
Click the button Add new to add a new icon set, set a name.
Click the button to browse a font file. The font file must be generated through the IcoMoon App, it allows you to use tens of pre-defined sets or create your own font using SVG icons.
IMPORTANT When generating the font, you need to select name and class prefix. Also, please avoid the prefix icon.
Download the icon set and browse the file, the page will be reloaded automatically. The font will be parsed and the icons should appear. If you make changes, you can re-upload the set by clicking the button `Reload icon set`.
If you expand the icon selection field, the dropdown for set should display your custom font: