Navigate To: Merchandise > Rules
Steps to Add a Custom Font Size
1. Click on gear Icon to add a custom font size as shown below:
2. Click on Add Custom Value as shown below:
3. Now add the value or size of the font size under the value box then click on Add button as shown below:
4. After clicking on the Add button, the put in value will appear as shown then click on the Done button and save the Rule by clicking on the Save button. This way custom font value or size will be added. Likewise more values will be added.