Hi Vinay,
the fact that the lane element is still missing in the current build in release 1.1 of the Process Modeler is a result of a major discussion issue in the BPMN working group during the development of the V0.9 specs. The necessity of this element has been proven in the meanwhile as being part of the BPMN core element set.
After having talked to engineering, this element type will be available in the next build (101) of the current release, downloadable somewhen next week.
Both swimlane elements (pools & lanes) are always drawn in the specs in horizontal manner, so we implemented the pool element alike. After a short investigation I found out that both horizontal (left text) and vertical (top text) representations are valid. Build 101 will fix this too.
For now (build 100) as a workaround, you have the possibility to enable the ‘rotate’ permission using the pool’s ShapeSheet. Afterwards use the ‘rotate shape’ function to make a 90 degree right rotation.
Btw, the validation function shouldn’t be affected through this interference.
Best regards
Manfred