Go to Divi | Theme Builder, then click on two arrows import icon:
Now, in Portability window, click on Import tab, then on “NO FILE SELECTED” button and select magister-builder.json file that is in the Magister unzipped package. To import, click on “Import Divi Theme Builder Templates” button:
Click on “Save Changes” button to finish this step:
That’s all! You now have the theme installed and ready to use. Go to you site and see Magister in action.