1. Policies are updated/applied with macine policy 60 min by default
2. The policy with the lowest priority wil be applied (Your custom one in this case)
3. You need to right click and deploy your custom policy to a collection of machiens for that policy to be applied.
4. You can't reset default this is why you should always create custom policies
Justin Chalfant | Blog: setupconfigmgr.com | SCUP Catalog: patchmypc.net/scup | Please mark as helpful/answer if this resolved your issue