Step 1: Click on '+' on the menu bar. Select other macros.
Step 2: Search for event macro
You can insert an existing event or create a new one.

Step 3: To create an event:
- type the name of the event and select date range
- enter the first letter of the space name and select from the drop-down list
- select category of event
- enter maximum number of participants (optional)
Step 4: The above options are also selected when adding an existing event.
Step 5: Once you create an event you can preview how it will be displayed. Then save.
You can also edit the event details by clicking on the ...(dots)

Sign up for an Event
Error rendering macro 'children'
Cannot invoke "com.atlassian.confluence.spaces.Space.getId()" because "space" is null