The first step is to create a .plist file:
Save the file as plain text with a name "com.apple.Safari"
Log into the JSS
- Create a new Configuration Profile
- On "General" tab set the"Level" to "Computer Level"
- Select "Custom Settings" from the left-hand column
- Upload the .plist file you created earlier
- Ensure the "Preference Domain" is "com.apple.Safari"
- Scope it to the computers you want the preference applied to
