Hi @Antonio ,
Welcome to our forum!
Do you mean the function in New Outlook for Windows after your turn on the New Outlook button?
If so, as i know, Automatic accept or decline meeting requests options are not available in New Outlook, if you need this function, it's suggested that you could turn off New Outlook button to switch to Legacy Outlook.
Please kindly understand that many functions are not designed at present. At present, what I can do for you is to submit feedback for your request and I have post here, and you could vote for it. If you have any suggestions or ideas, It's suggested that you could post here. Hope Microsoft will notice this in the future. Thank you for your understanding and support!
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