Clara is unable to see or send attachments, access data in a hyperlink or RSVP to events via form or email. This includes using a scheduling link, such as Calendly, to select a time to meet.
This is for both your security and privacy, as well as for Clara's security.
You can copy relevant information that Clara would need to successfully schedule your event and paste it as part of the email text. For example, Clara is able to use a Calendly link to reference a participant's availability, but will need to send the invite, so it's important to include the participant's email address in the request.