EXCEL · UX · AUTOMATION
An Excel file can become difficult to use long before it becomes technically complex. It happens when the user has to know too much: which sheet to open, which query to refresh, which cells not to touch and in which order to perform the steps.
Reduce unnecessary decisions
If the process has a clear flow, the interface should reflect it. A few inputs, a few buttons and clear messages are often more useful than a workbook full of options.
Separate configuration from operation
Technical parameters can live in a visible but separate configuration sheet. The operational user should instead see only what is needed to complete the current task.
Automate the path, not only the calculation
A useful macro does more than run a calculation faster. It can check prerequisites, import data, refresh queries, verify the outcome and prepare the output. That is the point where the spreadsheet starts behaving like a small tool.
The final criterion
If using the file requires an instruction page longer than the interface itself, there is probably still design work to do.
A good Excel tool hides complexity without hiding control.