Rainbow Hub - Allow Set-PC and App to all call together

Rainbow Hub - Allow Set-PC and App to all call together or make calls together and lose the choice botton in the PC app, it confuses users and is pointless.  

With a SIP set , eg none M range irt works how users would like.
I dont see the point of the feature, ie set to set and calls to the App call the PC, if answered on the PC the set takes the call. 

Our 1st 3 Hub customer have all complained about this and has accounted for 99% of issues.