ID specifies that Manager is an ID variable. An ID variable and all columns to its left appear at the left of every page of a report. In this report, Sector and Manager are group variables. Each detail row of the report consolidates the information for all observations with the same values of the group variables. FORMAT= specifies the formats to use in the report. 
   define manager / group format=$mgrfmt. id;
   define sector / group format=$sctrfmt.;
   define sales / format=dollar11.2 ;