The Template Option is only present in Pages, not Posts. This is WordPress System, not Themes. If you use your desired WidGet from the available from WP-Admin > Appearance > WidGets, the Archive and Meta will be removed. When you will have no WidGets in Right Sidebar, what will be shown in the blank space ? That’s why WordPress shows 02 default WidGets. When you will use any of your choice like a Text WidGet those 02 are removed. But you can completely remove the Right Sidebar. And then you need to show the Content 100% to fill the Blank Space. Please consider all features are not Theme Issues. A Theme may or may not have the Same Features.
Can I Disable the Sidebar from NewsPress Theme ? The Answer is YES
Most of our Themes have Layout Options like Full Width, Content+Right Sidebar and Left Sidebar + Content which can be selected from the Theme Options. But NewsPress doesn’t have that option. We didn’t provide it at NewsPress because NewsPress is a special Theme for News Sites. All News Sites should have a sidebar to show popular news, advertisements etc. But, some of our users still want to disable the Sidebar. For Pages you can do it easily selecting the Full Width Template. All of our Themes have Full Width Template for Pages. ( Please remember that Template is not present for Posts by WordPress System )
You can easily Remove the default WidGets from WP-Admin > Appearance > WidGets putting any WidGets from the available items. The Front Page Sidebar and News Page Sidebar should not be left blank until you completely disable the Sidebar. This is a technique which can be used in all of our Themes following This Tutorial.
If you want to hide the Sidebar from Front Page you can paste the Following in the WP-Admin > Appearance > NewsPress Options > Custom Code within Head Area for Front Page Box
<style>#right-sidebar { display: none; } #content { width: auto; }</style>
If you want to hide the Sidebar from Single Page News you can paste the Following in the WP-Admin > Appearance > NewsPress Options > Custom Code within Head Area for Single Page News Box
<style>#right-sidebar { display: none; } #content { width: auto; }</style>
If you want to hide the Sidebar from Single Page Video News you can paste the Following in the WP-Admin > Appearance > NewsPress Options > Custom Code within Head Area for Video News Box
<style>#right-sidebar { display: none; } #content { width: auto; }</style>
If you want to hide the Sidebar from Category/Archive and Other Pages you can paste the Following in the WP-Admin > Appearance > NewsPress Options > Custom Code within Head Area for Category/Archive and Other Pages Box
<style>#right-sidebar { display: none; } #content { width: auto; }</style>
Thus you will get the Site like the following without Sidebar