What must you do before scaling a floorplan after uploading it?

Before scaling a floorplan after uploading it, it is essential to utilize the scale tool. This tool allows you to adjust the dimensions of the floorplan accurately based on a reference point or any predetermined scale, ensuring that your final diagram accurately reflects the physical space it represents. Using the scale tool first is a critical step because it sets the parameters for how scaling will be applied, ensuring consistency and precision in the layout.

Choosing a reference point or entering dimensions manually might also be necessary in certain contexts but are processes that generally follow the initial action of selecting the scale tool. Creating a duplicate may be useful for certain purposes, such as preserving the original layout, but it does not directly pertain to the mechanics of scaling and may not be a required step specifically for scaling purposes. Thus, the most appropriate first step in the scaling process is engaging the scale tool.