Create a calculated field with all the conditions you have using and clause like this.
[Users] = 'CAD + CAE'
This will result in a Boolean field. Use this filed instead of all the conditions you have included in the above question.
Apply this boolean field as a filter and select TRUE.
Hope this helps
The question - can you use values in an LOD - yes you can -
the calculation you created is a little complex but you could od it that way or your could put your conditional clauses after the colon:
But here is what is going on with the fixed LOD - Fixed creates combinations of all the dimensions that precede the colon and then aggregates them by what follows the colon - so if your statement was just
[Fiscal Quarter],[Region]',[Deployment],[Users]: ...
the statement would make all the combinations of quarter, region, deployment, and users to create a higher level of data for your data - that level is not an aggregate in itself and can be used in all other types of calculation including other LODs or table - by specifying values for the dimensions tableau will calculate a single value - that's OK but not that useful for use in other calculations
A better approach is use the conditions as qualifiers in the next level of the calculation - it is also more efficient
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