Build A Record Around The Required Designation
If EN 16139 Level 2 is part of the project brief, record that wording accurately and request the corresponding supporting documentation. Establish the identity of the chair being assessed and the configuration described in the evidence. Avoid filling gaps with assumptions about dimensions, adjustment or suitability for a particular activity. A reference to a standard is one part of the assessment, and its relevance depends on the actual workplace requirement. Give the person responsible for the seating specification enough information to review the designation and any stated limitations together.
Use The Room To Define Practical Fit
Walk through how people will approach, use and leave the seating position. Measure the relevant table or desk, available floor space and the chair dimensions supplied for comparison. Consider whether a user can take a suitable position for the intended activity and whether neighbouring chairs leave adequate room. For a shared setting, assess several users rather than allowing one person's experience to represent everyone. Where adjustment information is needed, request it explicitly; the EN 16139 Level 2 designation does not provide a substitute for those practical configuration details.

