The techniques described herein provide the ability for an owner of a content object to send an ephemeral link to participants in a meeting instance. An ephemeral link is a link to a content object that provides access to the content object for a time period associated with the meeting instance. In one example, the time period starts when the content object is shared during the meeting instance and ends when the meeting instance is scheduled to end. Thus, access to the content object via the link expires based on a scheduled end time of the meeting instance. However, in further examples described herein, the owner of the content object can dynamically adjust, via user input, the period of time during which the link provides access to the content object. The dynamic adjustment can extend the access or shorten the access to the content object via the link.