Worksheet add process step lets you add a new worksheet next to an already used worksheet on the fly in the same workbook, like shown on the picture below.
The parameters of the process step:
New worksheet Djeeni name (Optional): this name identifies the worksheet during the process. If it is not given then the worksheet will be created but will not be usable further in the process.
New worksheet Excel name: According to the MS Excel naming standard
Next to existing worksheet - Djeeni name: The Djeeni name of an already used worksheet.