With the democratisation of mixed reality, the need for content is growing fast. In particular, a strong demand exists for interactive and scenarised content, in many domains. As diverse as those domains are, a common problem is the difficulty for the domain experts (medical staff, archaeologists, ...) to be understood by the developers who implement the applications. This difficulty often brings the experts to turn away from mixed reality, or to use it incoherently. Therefore, to ensure a better transmission of the experts knowledge and needs in mixed reality applications, we propose to give a greater importance to the expert during the creation of those applications, through two tools. The first one allows to build an augmented reality ap...