Is it correct that I can't forward to a plus address?

Is it correct that I can't forward to a plus address?

We have our domain, say "example.com", on Zoho. We have created a group on zoho control panel, "info", whose email address is " info@example.com". We'd like emails sent to " info@example.com" to be delivered to some of our internal users (users with an email addr of "{something}@example.com") AND, to a Gmail account, " someone@gmail.com" but specified with the "plus" address " someone+infoexamplecom@gmail.com". BUT Zoho doesn't let me enter a "plus" address in the "Add members" section.

Is this a glitch in Zoho or by design?

I've read, but have not tested, that emails can be sent to a Zoho plus address (eg. " info+xyz@example.com"), so it's unusual that you wouldn't allow emails to be sent to an external plus address.

Thanks