Hi Lindsey,
Steven and others gave great suggestions. One other suggestion I'll let you know of for the future (which would only work in your use case if the general admission people have 1 admission item and the staff/presenters have another admission item) but within the advanced settings tab of the admission item(s), if you click on edit, you can set a minimum and/or maximum number of sessions that invitees who have that admission item can select. So for your example, in the general admission item, the maximum would be set to 1 and then for the staff/presenters admission item, there would be no maximum set. You can also choose whether you'd like to count waitlisted sessions towards these limits as well (if you use a session waitlist.) See screenshot below. They will get an error message that says "Based on your admission item, you cannot have more than 1 sessions" but you can control/change what this message says within Language Management within the event.
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Julia Plymack
Client Success Manager
Cvent
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