Table:
0
A
B
C
1
role code
role description
staff roles
2
leader
Project Leader
3
researcher
Project Researcher

Questions and formulas:
Question: Researcher descriptions 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:C1,A1="researcher"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:C3,A2:A3="researcher"),2))
Level: medium
Question: Descriptions for researchers
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:C1,A1="researcher"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:C3,A2:A3="researcher"),2))
Level: medium
Question: What is researcher's description?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:C1,A1="researcher"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:C3,A2:A3="researcher"),2))
Level: medium
Question: The description of researcher.
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:C1,A1="researcher"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:C3,A2:A3="researcher"),2))
Level: medium