If any products have red lettering in the My Products section then that means there is an error with their information. Any corrections to product errors can be done in the Product Errors section of your Navigation Dashboard.
Dual Items is where other distributors selling the same product are stored. By storing them here it saves you from having to scroll through dozens of the same items. This section also helps the Price Comparison module find you lower prices.
In your manual, you might have read references to a "Post Off" and a "Discount" column, but you do not see both in CobaltConnect. The column you see depends on the state your business resides in. You will see the Post Off column if your business resides in the state of Connecticut, and Discounts if you are in New Jersey. The difference between the two is that Post Off shows you the price change for a product occurring next month, while Discounts shows you any possible discounts the distributor is offering for the current month.