I installed Zabbix Server 3.2 on Ubuntu 16.04 using a package. When I go to the Configuration tab, there is no Web Monitoring option. How do I activate that option?
Web monitoring is now part of host/template configuration, you can access it for each host/template. From the Zabbix 3.2 manual:
Since Zabbix 2.2 web scenarios are attached to hosts/templates in the same way as items, triggers, etc.