Interest in using AR and VR in education for improved learning and retention is growing. However, creating effective XR instructional content is challenging. To boost XR adoption in education, user- friendly authoring tools are essential. This study presents HELP XR, an authoring tool tailored for XR activities. Adopting an action research approach involving the user in an agile development process, this paper presents the architecture of the authoring tool, and examines the challenges associated with designing XR-based training and the inherent complexities it presents for authoring tools.