I just switched to Quickbooks from Freshbooks. One thing Freshbooks had nailed down was this issue. 

I have one client with 8 different office employees, owners, admin etc.  who all request quotes form me. I was able to enter them all under the client umbrella and simply click who I wanted to send the estimates too.

This is a Huge pain in the butt to have to manually change/enter differnt ones every time they request a quote. FIX THIS PLEEEEEASE!

Not sure why it's so hard to revamp .