How to Auto. Update "E-mail Id(s) To Notify" with the recipients sent by Technician?

How to Auto. Update "E-mail Id(s) To Notify" with the recipients sent by Technician?

Dear All,

If I am replying to a Requester through the request and adding another recipients (To) while replying, how can we auto. update "E-mail Id(s) To Notify" (Field) to have all the same recipients added once the technician have sent an email?

Regards,
Wajahath Farooq

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