MDX sum over various sets - sum

Question

I have a datacube with a dimension of a large number of academic courses. I would like to group the courses (create a set) by the name of the course (using filter and Inst), so that I can calculate some aggregate statistics. i.e. I would ultimately like a list of the number of people doing courses with those groupings (split later by their home geography).
I have four measures, which include
[Measures].[Achievements]
[Measures].[Starts]
[Measures].[Enrolments]
[Measures].[Leavers]
I have managed to make two sets:
CREATE SET [MyDataCube].[BA] AS
{FILTER(
[Aim].[Aim Title].[Aim Title].Members,
(InStr(1, [Aim].[Aim Title].CurrentMember.NAME, "BA ") <> 0)
)
}
GO
CREATE SET [MyDataCube].[BSc] AS
{FILTER(
[Aim].[Aim Title].[Aim Title].Members,
(InStr(1, [Aim].[Aim Title].CurrentMember.NAME, "BSc") <> 0)
)
}
And then I can query a single set:
SELECT
NON EMPTY [AccessCourses] DIMENSION PROPERTIES MEMBER_NAME ON ROWS,
NON EMPTY Hierarchize({DrilldownLevel({[Geography - Learner Home].[Learner Home].[All]})}) DIMENSION PROPERTIES MEMBER_NAME ON COLUMNS
FROM [MyDataCube]
But how can I get a table with [Geography - Learner Home].[Learner Home].[All] on the rows, with a sum of all [Bsc] and [BA] courses on the columns, like:
I would like to do this for [Measures].[Starts].

Answer 1

Something like the following maybe:
WITH
MEMBER [Aim].[Aim Title].[All].[BA] AS
AGGREGATE(
[BA]
)
MEMBER [Aim].[Aim Title].[All].[BSc] AS
AGGREGATE(
[BSc]
)
SELECT
NON EMPTY
[Geography - Learner Home].[Learner Home].MEMBERS ON ROWS,
NON EMPTY
{
[Aim].[Aim Title].[All].[BA]
,[Aim].[Aim Title].[All].[BSc]
} ON COLUMNS
FROM [MyDataCube]
WHERE [Measures].[Starts];