How many instances of Staging Explorer can be opened at one time on one machine?

The correct answer is that only one instance of Staging Explorer can be opened at a time on one machine. This design limitation is intentional to streamline workflows and prevent conflicts that could arise from having multiple simultaneous instances. When working with data and staging areas, it is crucial to ensure that processes don't interfere with each other, which could lead to confusion or data integrity issues. By restricting users to a single instance, the system enforces a clearer operational environment, allowing users to manage their staging processes more effectively without the risk of overlapping actions or conflicting data manipulations.