Simultaneously HDA Interfaces instances running number?

Hello,

I am interested in determining the exact number of multiple instances of the HDA interface that can run simultaneously. In the following link:

https://docs.aveva.com/bundle/pi-interface-for-opc-hda/page/1012033.html

The article mentions that "is designed to run multiple instances of the interface simultaneously." But there is no information on how many or what order of magnitude this number can be, so I need to know if you can only have 10, 50, 100, or 500, etc. instances. I appreciate any comments you may have on this matter.