You can place the Social Carousel wherever you like on posts and articles.
For Enterprise API customers, you place the Social Carousel using this code: <div class="ctx-social-container"></div>.
For WordPress Customers:
When the Social Carousel is enabled, it will show up by default above the Main Module and below the FollowUp button (if enabled).
If you use the Widgets functionality to put this in a Siderail or Footer, that will override the default placement.
If you use the shortcode: [contextly_social] that will override the default placement AND the Widget placement.
Also be aware that the Social Carousel displays only when there are 3 or more relevant Tweets. When there are fewer than 3, not display is shown.