How to use Hybrid model in Kylin

[yu feng]

Hi All :
    I find kylin-1.0 can generate Hybrid model which is composed by
multiple cubes, jira is here :
https://issues.apache.org/jira/browse/KYLIN-867

My question is how to use this feature in web UI.

BTW, if I release some segments, but the cuboid files in HDFS and htable in
Hbase of those segments can not be deleted, Is there any tool to release
those invalid datas.

Thanks a lot.