To edit a saved add-in:
1. Select File > Open.
2. Navigate to and select the add-in file.
3. Select one of the following options:
– On Windows click the arrow to the right of the Open button and select Open using Add-In Builder.
– On macOS, select the Edit after opening option.
4. Click Open.
The file opens in the Add-In Builder. Update the arguments and then save the changes.