Device usage differ from person to person. Thru our experience we have separated device usage into two profiles with different investigation axes.
For divice of executive manager, complex investigation is expected due to professional position and device usage: communication, documentation, design, usage of common office tools.
For divice of IT or tech savvy, complex investigation is expected due to professional position and device usage: communication, documentation, coding, usage of IT tools, potential usage of anti-forensics tools.