If you’re editing a design and you want to modify a master, you must open the master in a separate tab. You can do this within the Editor, or you can open the master from the Library.

To open a master from the Editor, follow these steps:

1. Open the Inspector.
Double-click the master on the Editor canvas.

2. Open the master.
Click the Open Master button. The master opens in a new Editor tab.

As shown below, you can open a master from the Inspector.