MODX Minishop2 how to get 6 items from each category?

Question

MODX

Hello!
I want to display on the main page a filter of products by category. I use this code:

 
 

 
<div class="index-products products span3" id="catalog">
            <ul class="simple-filter">
                
            </ul>
</div>

If in "!msProducts?" I leave &limit=`0` - then all products are displayed (and this is a lot), if I set &limit=`0` - then only 6 products (which is also bad) ...
How to achieve that! msProducts? received exactly 6 items from each category? Perhaps you need to put some additional parameter in the sample?