How to edit pagination??

Pagination is a core feature, not something specific to a theme.

Here’s the Codex reference:

http://codex.wordpress.org/Function_Reference/paginate_links

If you need further help I suggestion you post in one of the general forums where you’ll get a broader range of folks seeing it than here in the Twenty Fourteen forum.

I also suggest you include a link to your site so folks can help you more easily.