What Does the Update Change?
The functionality allows you to customize the default placement of the Call to Action message in the Instagram Story ad editor, so that it will not cover other important elements of the creative. The call to action button is now a sticker that can be allocated a custom position.
How to Change the Position of the Call to Action Sticker?
After posting your ad materials, go to edit your Instagram Stories ad. In the “Creative Tools” section, you will find settings for the Call to Action sticker, with the help of which it will be possible to move the message by the selected value – both vertically and horizontally.
Source: Facebook Ads