No doubt, user error, but:
- I do not see where to activate the automated vacation response message.
- I do not see where “ change your reply-to address” can be accessed.
(I am on the duck browser and have signed into Yahoo on that platform (redundant))

   Please walk me through these options beyond what is already printed as I see no option for  “ settings * ”  as directed on your  FAQs pages.

Thank you, in advance.