What does the grouping function in the diagramming tool allow users to do?

The grouping function in the diagramming tool allows users to combine multiple selected items into a single unit, which enables them to move those items together seamlessly. This functionality is particularly useful when organizing complex diagrams, as it ensures that the spatial relationships between the grouped items remain intact during repositioning. By grouping items, users can manage layout changes efficiently without the risk of misaligning individual elements.

While resizing items together or changing object colors in unison are valuable features that might exist in other tools or contexts, they do not specifically relate to the core purpose of the grouping function. Locking individual objects, on the other hand, pertains to restricting modifications to specific elements rather than facilitating collective movement, further clarifying the unique purpose of the grouping feature.