I'm not sure how this could be related to miniBB, in general. Surely miniBB has internal pagination mechanism. For example, on the start page of this forums you can see a bottom navigation which takes more than 170 pages. So it splits about 4,200 topics list into several pages.
This is actually your purpose to provide a valid output in your CMS.
I am not sure what did you did and how and so I can't give a proper recommendation on the exact code. But answering the question,
sandy.pittendri firstname.lastname@example.org :
Is there any way to make minibb display topics in bunches
Of course, there is.