Here follows the step to find where to change the settings for LowMemoryLimit, TotalMemoryLimit and other memory related properties of the SQL Server Analysis Services instance.
Fire up your SQL Server Management Studio, and right-click the server and select ‘properties’
Then check the ‘Show Advanced (All) Properties’ and you’ll see al available properties, like this example:
If values listed are between 0 and 100, they are treated as a percentage of the physical memory on the server. Otherwise they are treated as bytes.