Solution
The Excel Get Data VI lets you pull data from named cells or ranges. On the other hand, the Excel Insert Cells VI, used together with the Excel Easy Table VI, allows you to add data to an existing Excel file. This process is covered in our knowledge base article, Inserting Data to an Existing Excel File Using the LabVIEW Report Generation Toolkit.
For this use case, just wire the name of the cell or range into the Name input terminal of the appropriate VI. You can find this terminal at the bottom of each VI.
Note that when you insert cells in a named range, you are given the option to either shift the range down or to the right, or enter an entire row/column. Inserting a row or a column will insert cells throughout the entire worksheet, not just in the named range you have selected. If you opt to shift cells down or to the right, only one cell will be entered at the top left corner of the range.