If the SEO By 10Web plugin is not installed in your WP dashboard, go to the 10Web Dashboard and enable the SEO service. In your WP dashboard, go to SEO by 10Web, to set meta robots, click on Meta Information. In the Pages box, click on the drop down field and choose the page you would like to set a meta robot to. Different pages may have different options. As you set these options, to the right side of your WordPress dashboard, you will see a preview of your information as it will appear in the search results. 

To set Meta Robots for Archives, click on the drop down menu and choose one of the Archives. Once you have chosen the archive,  continue customizing. Set a Meta Title, Meta Description, Keywords, etc. When done, click Save.