Solution
InstrumentStudio has replaced Soft Front Panels in software drivers as of version 21.3. This is to bring together all Soft Front Panels in one place as a new unified piece of software.
You still can find the legacy Soft Front Panels if you install a version prior to 21.3 (for example, NI-DMM 20.0). You can open the Soft Front Panel by following this file path:
C:\Program Files (x86)\IVI Foundation\IVI\Drivers