P6 Resource Pool

Hi , I have assigned my resource in Various project , Now My Client want to see the start & finish date of Resources in the Resource Pool Not in resource assignment Field ...
I have created Two user defined fields in Resource Pool as " Start date of Resource & finish date of resource" Now How can i map these date with start & finish date which are appearing in Resource assignment ...against resources Name

Because resource Pool shows all the resource & resource assignment shows only assigned resource ...

So My purpose is -
1. To see who is not assigned in any of project
2. Who will be available from which date to which date

Thanks