Hello Sachin,
There are two ways to do this:
1. Enable the Float Bar series X values - in this mode you have to set a X value for each bar. The bars with equal X values will appear in the same lane (category).
2. Use multiple Floating Bar series - the actual number of series depends on the maximum number of bars in a lane. For example if you have at most three bars in a lane, you have to add three series. For the lanes with less bars you have to set empty data points.
Best Regards,
Nevron Support Team