Angular Admin Interface

I am kinda new to Angular and programming overall (started this year) and I am building a web site using Angular (as a study project).

I would like to add an admin interface to edit the content of the site (title, text, etc...)

I was wondering if I could do that using some div "hidden" on the page that would appear when the admin logs in through the auth service, or I can only do that by "duplicating" the whole site so the auth guard redirect the admin to that part where he can edit everything or should I do a specific admin interface ala wordpress for instance.

I am not really looking for code but insights and best practices from more experienced than me people.

Thank you for reading, cheers