Hi Nawaz,
For the above settings you will get the Vendor with individual payment and hence it will cover your first point.
For the total amount you can see for reference as below
Give the Reference ID for which you want to refer (mention in the Amount of Payer node) in the other node (used Reference ID "AMOUNT"
Use aggregation for mapping structure and Conversion function as required:
Give the reference ID where for e.g. the summation is required:
Please follow the above step to include the sum as per your requirement.
Also please find below the link for basic DMEE config settings and understandings:
DMEE Configuration:Step By Step Part 1
DMEE Configuration:Step By Step Part 2
Thanks and regards,
Mohit Gohil