To begin, navigate to the Toolbar > Edit with Elementor > Footer - Home 1
Or go to Templates > Theme Builder > Footer > Footer - Home 1 > Edit with Elementor. Control the layout, conditions, rules and styles of the footer template.
Please check these guides for further information:
Create Footers Using Elementor
Guide to Vamtam Elementor Builder
Next, click on the "Save options" icon and select "Display conditions":
Here, you can add the footer template to whichever post or page.
Please check these guides for further information:
Vamtam Elementor Themes: How to apply different headers/footers to different pages?
Editing the Footer for mobile resolution
When hiding an element, and switching to the view it’s hidden on, you will see that this element is “muted” - see the yellow arrows:
This gives you a clear indication that this element will be hidden on the live site but still enables you to edit it as needed.
You can edit that specific area in the responsive mode in which it is not hidden. For example, if the element is visible on mobile but hidden on desktop and tablet, you will be able to edit the element in the mobile view.
Switch between Desktop, Mobile or Tablet views by clicking on the corresponding icons on the bottom of the panel and edit the content dedicated to the corresponding resolution
You can also check this instruction: https://elementor.com/help/mobile-editing/