I have recently changed my theme to HashOne and what I am trying to do is to have a homepage with a content developed by Site Origin page builder and keep only HashOne Slider section.
When I disable all other Home page sections and keep only Slider, the page I have selected to be my static Homepage does not display anything else besides slider.
I would really appreciate your response whether it is possible to set page template as Homepage, disable all homepage sections except Slider section and build a page content with Site Origin page builder?
Yes it is possible. You will have to choose the default template in the page template option for the page that you have choosen for the front page.
But if you are using some page builder then you can use it to create your own layout by choosing a static page for the home page but again you can not combine the page builder with the theme default home page layout.