Essentially you want to send BCC calendar invitations that hide each invitee from each other. You can achieve this within your Outlook calendar application by creating a separate invitation for each attendee with the same Zoom link and meeting information. My understanding is Outlook no longer supports emails in the resources filed and in any event forwarding is not advisable since they are less likely to add it to their calendar and may not receive default reminders. If you want to automate the creation of multiple invites per event you can either try the Graph API or use Salepager which lets you send BCC Outlook calendar invitation with the Zoom link.