We really need two different settings for sales An A and B sales pipeline

An A pipeline will consist of sold subject to contract (under offer) properties with complete chains and will be sales in our Main pipeline before exchange of contracts 

A B pipeline will be sales where the vendor has a buyer but has not found anywhere or the buyer has a incomplete chain below them but their offer has been accepted and this type of sale remains in the b pipeline 

When the chain is complete it moves in to the A pipeline 

We need the ability to book a sale and perhaps tick a box include with a pipeline and then produce reports and break down by A and B pipeline