Hi, Could any one tell me how to give user access to create Tag whether it should give permission to "Lib" label or "etc" label

"To be able to modify the taxonomy, a user must be a member of the "tag-administrators" group (or have modification rights to /etc/tags). Assigning existing tags to content nodes does not require tag-administration rights. It reflects the distinction between authors using tags and librarians managing the taxonomy."

Attached Screenshot;

Please read this documentation for details: https://docs.adobe.com/docs/en/cq/5-6-1/wcm/tag_admin.html

Thanks for your input , its working