Make the opportunity to add trade offers to the block "Recommended

There is an online store, made on Beatrix Symfony.
On the detailed pages there is a block of "Recommended products" where editors add products to the item of the information block (indicating in the multiple box "Recommended goods" the desired set of goods).
At the same time, all trade offers of this product are displayed at once.
It is necessary to refine this block so that only specific trade proposals can be shown in this block.