add benchmark to sgpanel

[fsdfs]

I'm trying to add benchmark to a sgpanel chart. The chart is simple, it's just CTR, CTO and COR percentages and I would like to have it as horizontal bars. This is the code for the chart without benchmark:

proc sgpanel data=final(where=(user_name='xxx' and (event in('COR', 'CTR', 'CTO'))))  noautolegend;
   panelby sys_code / sort=(DESCFORMAT) novarname colheaderpos=top; 
  hbar event / response= percentage group=sys_code datalabel legendlabel = 'Percentage' fillattrs=(color = orange);
run;

So nothing fancy. However, I thought about just adding another line with hbar event / response = benchmark... but SAS puts it on the top of my first data series. How do I control the placement of the second (benchmark) series?

[ChrisNZ]

Please provide test data and maybe 2 graphs, one with the result obtained and one with a line drawn by hand showing what you want.