To begin, navigate to the Toolbar > Edit with Elementor > Footer 

Or go to Templates > Theme Builder > Footer > Edit with Elementor. Control the footer template's layout, conditions, rules, and styles. 

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:

Display conditions Elementor

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 indicates 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 that 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: