The following diagram illustrates the Samplitude Audio Setup.  Please note that you will need to setup your Scope project prior to opening and setting up Samplitude, as Samplitude will see the Scope ASIO inputs and outputs the same as it would see any other Windows Audio drivers.

From Samplitude, open the 'System Options' windows and select 'Audio System'.  Select the 'ASIO Device' and 'Clock Source' as shown below.

Next, select 'Audio Devices' under 'System Options' and enable the ASIO Inputs and Outputs as shown below.