TemplateToaster provides an option to design separate page-templates, you can design two different page -templates one with sidebar and another without sidebars and can apply them to the required pages after activating your TemplateToaster generated template to WordPress end. For more details please follow the steps provided below:
Go to TemplateToaster -> Select WordPress -> Page-templates -> Add two page-templates one with sidebar and another without sidebar.
Now, after installing and activating the template to WordPress dashboard -> Go to Pages -> Edit your page on which you want no sidebar -> Page-templates (provided at the right side of the page) -> Select the template name from the list on which you haven't applied sidebar within TemplateToaster.
Similarly, Edit your page/pages on which you want sidebar -> Page-templates (provided at the right side of the page) -> Select the template name from the list on which you have applied sidebar within TemplateToaster.