This is not currently possible with Simplify3D and the Ultimaker 3 but I have forwarded your request to our development team to make sure they are aware of your interest in this.
Ok, Thanks for that. I realise that you will probably need to speak to someone else to get an answer but do you have any idea if this has been raised before and when it may be resolved. I don't spend my life printing but am printing intensively at the moment and Cura make a it SO much easier, being able to send prints directly to the printer from the PC. In every other respect, though S3D is streets ahead but I'm tending to use Cura most of the time just for the convenience.