STANDARDS SECTION XVIII - TOURNAMENT STANDARDS OF PERFORMANCE The Chief of Umpires shall: xvi. Be familiar with all WTA electronic forms and Officiating Arena  content. b.  Chief of Umpires i.  Be conversant in the local language. ii.  Have hired prior to the Tournament, in consultation with the  Tournament Director and with the approval of the Officiating  Department, sufficiently certified, additional Chair Umpires, and  competent Line Umpires and Net Umpires (when no electronic net  device is available) and provide the list of additional Chair Umpires to  the WTA Supervisor and the Officiating Department at least twenty- eight (28) days prior to the Tournament. iii.  Conduct meetings with the Line Umpires to specify assignments and  specific procedures. iv. Schedule the on-court assignments for all Chair Umpires in  consultation with the Referee and approval by the Supervisor,  except at combined events where the WTA and ATP Supervisors are  responsible for the daily assignments. v.  Coordinate the evaluations of all officials (Chair Umpires and Line  Umpires) with the Supervisor and Referee. vi.  Not act as a Chair Umpire or a Line Umpire for the Tournament. vii. Be able to assist the Referee and the Supervisor wherever needed  and be present on site at all times during play. viii. If necessary, conduct a clinic for the local Chair Umpires and Line  Umpires. ix. Arrive on-site at the Tournament by 12:00 noon on the Qualifying  Sign-In day. x. Arrive at least one (1) hour before the first scheduled match, remain  on-site at all times during matches, and leave after the end of play. xi. Coordinate the uniforms for Lines Umpires and Chair Umpires and  collect sizes from all in advance. Inform the officials at least two  (2) weeks prior to the event about the dress code and/or uniform  328