All theme related customizations are done through WordPress Customizer. To start customizing theme find the Appearance tab and click on Customize.

Once you click on that WordPress customizer should open.
Trigger sidebar tabs.
Sidebar tabs like Menu, Categories and Account can be directly triggered through links anywhere on the page including header menu. For example when we click on Catagories in header menu it opens sidebar with categories tab selected.

To do this all you have to do is make sure links have one of the following href.
#selleradise_sidebar__menu
to trigger Menu tab.#selleradise_sidebar__categories
to trigger Categories tab.#selleradise_sidebar__account
to trigger Account tab.
Like shown in the image below. And you can do this with any link not just menu links.
