Unrestrict element placement and size.
Currently unable to place button anywhere within the button field. All have to be together within the field, meaning limited design options. Also Icon buttons, should be able to re-size the icon within the button. Elements on screen, such as Text and Image, should be easily changed in size. At the moment, very restricted as to how the course will look. Classic Captivate was ideal as we had free rein over the design.

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AdminShivang (Admin, Adobe Captivate) commented
Thank you for your feedback. You should be able to adjust the positioning of a button and other objects from the Alignment and Spacing option under properties. Link to help article for reference: https://helpx.adobe.com/captivate/help/add-button-component-captivate-project.html
If you have a different use case or requirement, kindly share more details. If possible, please share screenshot of the final result you're trying to achieve