2 Products not show up in customer group

[wiros]

I got 2 products in my shop that cannot be seen by customers who are in group 'customers' . If this customer is in groep 'visitors', the products are visible.

The 2 specific products are in the same category as other products that are visible by customers in each group.  So I was thinking, this should be a 'product-setting' . But I cannot find a product setting which will define in What group a product is shown. 

So its a  bug?

 

[wiros]

Solved. You get the best ideas, when you just posted the issue -:)

The problem was in the categorie setting, groups were not set right. Becouse other product from this brand were visible, it looked like this was not a categorie setting, so it confused me.