Licensees and other entities that implement FFD programs under this subpart must develop, implement, and maintain procedures for evaluating whether to assign individuals to perform or direct those duties and responsibilities making them subject to this subpart. A suitability or fitness determination conducted for cause must be performed face-to-face. A suitability or fitness determination conducted for cause may be performed remotely using electronic communications that provide sufficient visual and aural clarity to complete the assessment. A fitness determination may be supported by someone who is present in-person with the individual being assessed only during for-cause drug and alcohol testing determinations under § 26.607(b)(3) and fatigue assessments performed under § 26.211(a)(1). The supporting person must be trained in accordance with the requirements of either § 26.29 or § 26.608.