Resource Gantt Chart with Multiple Series (Apex 4.1.1)

Hi,
I am building a resource gantt and I want to show different types of entry in different colours.
My series query is:
select null,
time_record_id,
username,
null,
to_timestamp(to_char(event_date + (start_time/24),'YYYY-MM-DD HH24:MI'),'YYYY-MM-DD HH24:MI') start_date,
to_timestamp(to_char(event_date + (end_time /24),'YYYY-MM-DD HH24:MI'),'YYYY-MM-DD HH24:MI') end_date
from
oly_time_record
where
work_code = 'OFFICE'
order by 5, 3;which works well to show me the times when a user is going to be in the OFFICE.
I now want to add additional bars to the chart that shows me the times that a user is going to be 'WORKFROMHOME'.
The 'OFFICE' time should show Green bars and the 'WORKFROMHOME' should show Red Bars.
This is quite easy on normal charts, where you can add extra series but the Resource Gantt does not seem to allow more than one series.
Does anyone have any ideas about how I can get what I need?
Thanks,
Martin

Hi Martin,
there are a lot of examples of gantt charts in this forum.
Take a look here:
http://apex.oracle.com/pls/apex/f?p=36648:60
Markus

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