Labels, textual annotations attached to virtual or real-world objects, play a crucial role in Mixed Reality (MR) by providing guidance, instruction, and additional information. However, accurately placing and managing labels in MR environments is a challenging problem. Despite extensive research on label placement algorithms, little attention has been given to adapting MR labeling systems for real-world applications or developing accessible authoring tools for non-technical users. To address this gap, this work introduces considerations and concepts for context-aware labeling that go beyond static annotations, incorporating interactive and dynamic label behaviors that adjust to context and user interactions. Furthermore, an intuitive authoring tool was developed that enables users to configure and deploy MR labeling experiences without specialized programming knowledge. This work lays a foundation for more accessible, adaptable, and interactive MR labeling systems by combining context-sensitive MR labeling considerations with practical content creation.