Apple's behaviour around this issue has been completely ********... Instead of addressing the issue head on, indicating its a missing feature, and building it into a future IOS - No, they pretend it isn't an issue and 'the iPhone is meant to work this way' and 'log into exchange using webmail to forward it' according to their call centre.
Even the most basic Blackberry can do this feature out of the box!
Anyway, after literally searching every possible forum and finding nothing.... my solution was to try Doug's product above. For the record, i hate having to use a third party app for such a basic feature - however, the app works great and is only like $2. I can love using my phone again even though I still think Apple is ********. I may also switch to Android if this continues...
I receive NO compensation direct or indirect for my suggestion and his product is called 'Fwd Meeting' or 'Foward my meeting'.