In Lync, I thought I could schedule a Web meeting, but I am only seeing 'Meet Now.' Am I missing something?
No, that is correct. While in Lync you can start a meeting (Meet Now) and invite people to the meeting. To schedule a meeting for a future date/time, you need to be in Outlook and do the following:
The attendees will receive an e-mail message, and once they accept the invitation, the meeting will be added to their calendar. To attend the meeting, they will open the meeting and click the Join online meeting link.