Posts under page

Hello there, first of all I am extremely new to wordpress and just starting to do my own site. I am just trying out the menu functions, pages and posts. I am using drag and drop under site origin plugin. I assigned few posts as sub items under a page in the main menu. Is it possible for them to appear when I click on the menu page, not only on the drop-down list?

https://ww.wp.xz.cn/plugins/siteorigin-panels/