How to create a File setting through MSP to set a Registry setting?

In MSP under settings ->  Click on Create and in the Setting Type drop down select FILE.SETTINGS.XML and then select the registry file and place it in the Application directory as shown below.
After creating the setting The user will need to create a staging barcode with just the setting selected.

Click on the Staging – Barcode in MSP and you will get the Barcode Below. The barcode below will set the MTU to 1300 on the SB1. It is a standalone barcode not requiring a backend.
The user must cold boot the device for the setting to take effect.

The below barcode wil set the MTU setting on an SB1 to 1300 as long as the user cold boots the device.