Listen the sequence of operations

1. Created a product , a component
2. Few Bugs were posted (by the admin Privileged user)
3. User group not assigned to the product.
4. The product not visible to the users.
5. Later a user group added to the product.
6. THIS USER GROUP UNABLE TO POST NEW BUGS IN THE PRODUCT. (the
product is not visible for this user group)

The user who is not able to post bugs in the product is added to the
group. That group is added to the Product and
Permission has given as follows
Shown/Shown, ENTRY, CANEDIT, editcomponents, canconfirm, editbugs

how to have the product when clicking the New link?

Please help us.