Augmented reality is essential for the Metaverse because, with this technology, people, spaces, and things can be digitally and physically intertwined. But the creation of AR content is a very complex process carried out by technically skilled developers. For the Metaverse, it is necessary to enable non-professional users to create AR content. We, therefore, want to study the challenges that non-professional users face while creating AR content for process guidance systems that represents a physical process. For this reason, we conducted an exploratory analysis using ten AR authoring experts and arranged a focus group with domain experts and AR authoring experts. As a result, we identified four fundamental design requirements on how an AR authoring tool must be designed to bring physical processes into the Metaverse. Thus, we contribute to understanding AR-based process guidance systems and enable the instantiation and evaluation of an AR authoring tool in large DSR project.