I have one link in main nav
example.com/photo but i want to add more links on page, which go on same page as this nav.
example.com/photo# help me avoid duplicate link to same page?
Duplicate links is not an SEO issue unless someone is doing page rank sculpting, in which case use
If you mean is a
Even if it did count as a separate link, Google would just choose one of them as canonical.
You can have two or more links from one page A to a page B. There is no issue here. You are not going to be penalized. There is no need to avoid duplicate links to same page. Your SEO guy is wrong.