Restrict a widget to a specific page

This is what I have now. http://www.dovbermantest.com/

It would also work if the Post Photo page can be on the menu only for the administrator and shop manager role.

I will look at the plugins.

Meanwhile this works:

Dashboard->Roles. Select a role label. Edit. Check the Capabilities you want this role to have.

You can also create a new role for even more flexibility.

Thanks,