[SalesForce] Create Button in Communities to redirect to external URL

I have a use case where I have to provide a button in the community page, it can be displayed in the community home page or in a detail page. The button has to open a new tab or page with the url it is embedded with. I checked the Global actions to add a new action to redirect to a page but the global actions doesn't have that facility.

Is there any way I can create a button that redirects to external page in Communities. I am using Napili template.

Thanks in advance.