<prompt> Translate the following text to EnglishBaada ya kuanzishwa kwa ratiba hii ya kwanza ya uainishaji wa barua, 3623 b inatoa kwamba Huduma ya Posta inaweza mara kwa mara kuomba kwamba Tume itoe, au Tume inaweza kuwasilisha kwa Wakurugenzi kwa mpango wake mwenyewe, uamuzi uliopendekezwa juu ya mabadiliko katika ratiba ya uainishaji wa barua.  <response>: Following establishment of this initial mail classification schedule, a 3623b provides that the Postal Service may from time to time request that the Commission submit, or the Commission may submit to the Governors on its own initiative, a recommended decision on changes in the mail classification schedule. 