After
successful Visual Studio
startup you will need to check if new addin is registered inside VS:
§
Go to
Tools | AddIn
Manager

Check
if MDX Designer for Visual Studio is available and checked. If not checked,
check
checkboxes:
§
Available AddiN
§
Startup

Now if
you do not have BI project select:
§
File |
Open | Analysis Database

§
Select
already database created or define new one

§
Select
cube in Solution
Explorer

§
Select MDX Designer tab
inside BIDS

Now you
are inside MDX
Designer.
