Lists of qual­i­fied shall be pre­pared and promi­nent­ly post­ed at the com­ple­tion of each pro­mo­tion­al screen­ing by the Com­mis­sion.  These lists shall group the qual­i­fied per­sons.  Such lists shall remain in force for two (2) years or until exhaust­ed, whichev­er is shorter.