Coincidently, but today I read both in Marco Russo's blog and in the newsgroups posting complain that Analysis Services 2005 doesn't have Usage Based Optimization (UBO) Wizard. Of course, this is not the case. UBO has been the fundamental functionality of Analysis Services since it very first release as OLAP Services 7.0; it was, and still is, one of the key features which differentiate Microsoft OLAP Server from other OLAP servers. I agree with Marco, that it might not be obvious to find it in UI, but it is there in the partitions tab - available in the menu on the right-click on partition. CTP 15 has couple of bugs related to UBO functionality, but we are aware of them, and they are being fixed for CTP 16. Below are two screenshots of UBO Wizard:
