On an excel pivot table axis, we need to filter a large dimension to several members by searching the dimension using the excel OLAP filter search capability. However, when you search for something with the filter, after it finds some members, your only choices are to select your new filter criteria ONLY. It will automatically de-select anything you searched for and selected prior. The dimension is over 10k members so does not all show up in axis filter and thus we can't select the members we want just by scrolling through. So it would seem from excel it is impossible to do this most basic function which would be very disappointing given how basic and common the need is. There has to be some other way than creating a set the cube to handle this. How do you accomplish this?
Excel 2013
SQL Server 2012