Subpage does not work

I am having problem with having subpages. I wonder whether this theme support it?

Just at one level. For example under “Photos” page only “Photos1” and “Photos2”. I create the “pages” and make the parental relations then form as the subitem from the “menu” and saved them. However when I go to the main website, all pages look on the same line without any sub-relation.

p.s: I wrote all details because I am an amateur wordpress user myself and would be so glad if you guide me. Thanks in advance.