Custom Template in SharePoint

Syed_Sohail 

I think that the standard library permissions should be sufficient but it may need some testing in your environment.

I'd also suggest reading some of the comments in this blog post on the topic, they may be useful for your deployment.

https://techcommunity.microsoft.com/t5/microsoft-sharepoint-blog/announcing-new-file-template-management-for-document-library/ba-p/238374