I used this "INSERT INTO" via database to make the QBR report public:
-- to find atributes, substitute report.rptdesign :
select reportnum, appname from report where reportname ='report.rptdesign';
-- to make QRB public, substitute reportnum, report.rptdesign and appname:
insert into reportauth (REPORTAUTHID,REPORTNUM,GROUPNAME,REPORTNAME,APPNAME)
values (REPORTAUTHSEQ.NEXTVAL,'reportnum','MAXEVERYONE','report.rptdesign','appname');