hello ​@Servesh 

Welcome to the DocuSign Community!

After understanding your question, I can suggest two work arounds. 

1. If there are CLM user, then you can directly select them as a user in recipients which will directly fetch the First & Last name.
2. If you are using variable, then you need to save them into the seperate variables. and using the c# option in the place of First and Last Name.

Refer the SS:
 

hope this helps, LMK if further assistance required.

Thanks for the reply, 

First suggestion is not applicable to my case. In your second suggestion, I am using C# variable to combine the recipients with comma delimited values. That means I input multiple recipients like “foo@email.com, bar@email.com” and I can see two emails coming in the next step. But same is not working for their first and last names, i.e. comma is not working. I wanted the corresponding first and last names to be populated with their emails. Hope I have clarified the requirement better.

I got it, you are combining the email (recipient) in one variable with the comma delimited but it won’t work for the first & last name.
Reason: if you open the configuration of signature step at the place of recipients, you will see both first name and last name should be configured separately and What I think due to this we cannot use this method.