The Site Builder tab is the main area to access and edit your pages. Under Site Builder > Pages you'll be able to navigate into any of the individual pages that make up your site if you wish to edit an existing section or content block that appears on a particular page.
The Administration tab is where you can establish or cancel a subscription. Setup your payout method and request a payout as well as apply additional site security if you would like to password protect or make a login required for your entire site or specific page(s).
Within this tab, you'll be able to notify classmates\family of the upcoming reunion or any updates leading up to the event.
You can paste in a list of email addresses or use the Address Book that will be auto-populated with email addresses entered during Classmate\Family registration or during a ticket purchase or donation made on the site. So you could for example notify solely ticket purchasers by clicking that button and unchecking the other options besides purchased tickets.
The Reports tab will be the main area to review your Ticket sales or Registrations. You'll be able to download all your reports, all Transactions or Tickets as well as access Custom Form submissions and details entered within each submission.