Portfolio Grid Show All

Hi,

I am using Portfolio Grid(PG) with 3 columns. I have more than 50 elements in PG in 4 categories.When I clicked All, the page which contains PG is going to be much longer.

The question is that how can I limit PG all button as 12? or How can I remove the PG all button.

I do not want to see more than 50 elements in one page.

Screenshot: https://picload.org/image/wdgwagg/portfoliogrid.png