Hi Sudheer,
V1- Takes care of posting to application tables such as VBAP etc . Automatic no manual intervention is required.
V2 jobs - Takes care of posting data to LBWQ/SM13 dependign upon update method. Gets scheduled when the data source is installed from the Business content and source system gets to know that this need to be updated to target BW system.
V3 Jobs - pulls the data from LBWQ to RSA7 with the help of v3 jobs scheduled from LBWE. This needs to be scheduled manually . Normally the frequency of the same is 30 minutes.
Please make sure to scheduled this job and then you can include delta info package in process chain scheduled to run on periodic basis.
Thanks