In the processing view of FormPro, you can open multiple form templates at the same time if they contain different text or a form identification zone. This is a special type of zone intended for distinguishing a particular form layout from others. Typically, it will be drawn around a word or group of words of the printed text that is unique at this position among all forms you want to scan in the same batch.
The zone should be considerably larger than the enclosed word as the page will not be adjusted yet at the time of form identification. It does not matter if the zone also contains other text. The safest way of distinguishing forms automatically is by using barcodes.