Hi @lfrsergey!
Where you can put any content (slider or anything else) on your site depends on your theme. What you can check first is the Widget publish:
https://smartslider.helpscoutdocs.com/article/1720-publishing-on-wordpress#widget
Usually widgets are displayed on many, or all pages. If you wouldn’t have a widget position that is good for you, then first you should check the child theme list in our documentation:
https://smartslider.helpscoutdocs.com/article/2005-how-to-publish-your-slider#custom-theme
whether you can find your theme. If you found it, follow that documentation, which will usually put the slider underneath the theme’s menu.
If you can’t find it there, I can recommend 2 options:
1.) Get in touch with the developers of the theme. They know their code better, and they should be able to tell you what options they give in their theme, and could let you know the best option.
2.) Use PHP code:
https://smartslider.helpscoutdocs.com/article/1720-publishing-on-wordpress#php
to put a slider shortcode into a file (or child theme) of your theme.
But please note we do not provide support for custom coding, so for child themes or modifying PHP code of your theme will require some developer knowledge.