Adding a new ParentHx Hierarchy

Hi Experts

We are currently on BPC 7.5 MS

We would like to add another Hierarchy on one of our dimensions. This dimension already has four hierarchies i.e :ParentH1,ParentH2,ParentH3,ParentH4).

What will be the effect if we add another hierarchy (ParentH5) to the dimension?

Is there a limit to the number of ParentH you can have on BPC for each dimension?

Will adding more ParentH to a dimension affect performance in any way?

Thanks in advance for all the replies.

Regards

Aadil