Changing Business Unit of User – Move records to new business unit is DIsabled/Enabled in Dataverse

While changing Business Unit of a User in Dataverse, You will see the Move records to new Business Unit Options shows disabled or enabled and you can not switch it. So how to switch it.
How to Enable
If you see the Options is disabled like below screenshot and you want to enable it you have to follow the below steps.

STEP 1 : Download the Managed Solution
Download a managed solution Organization Settings Editor (Dynamics 365) from below link.
Once you download Import the managed solution and open the solution.
STEP 2 : Edit the Settings
From the solution open the HTML Web resource.

The HTML Web resource will open and you will see an option called as
AlwaysMoveRecordToOwnerBusinessUnit |
Select Add option show that you can edit it. Now you can put false to disable and true to enable.

To Enable

Watch the Video below:
The video explains in details.