Warning! You will need the designer role with designer rights for the content library that is linked to the events.
An event can be linked to a content library. This does not mean that it's in that content library, but only that you can select the event for an activity if you have the designer rights for that content library. In a template you will only see the events that are linked to the content libraries under the Course content tab.
Creating an event
Click + Activity, fill in a name and select the type Event, then click Create. Click Edit at the new activity to set it up. You can put multiple events in the activity. That way learners can e.g. elect a date. Click Select event to add one or more events. There's also the possibility to add a condition to the activity.