Hello @user57823 ,
The time zone associated will be attached to your account settings. So if you're based on the east coast for example, the 11 AM start time will be 11 AM ET, which should reflect in the ICS file and therefore the recipient's calendar.
Your other option would be to use an online calendar tool to setup the Zoom link and other pertinent info, and share the invite link for that calendar setup in your email instead.
... View more
If I understand this Q&A correctly, there is not a pathway to automatically send a calendar invite to participants who have responded "they will attend" using the RSVP box.
... View more