Make your team participate in choosing the right date for a meeting or an event.
In edit page mode, add macro 'Sc easy meetings' for Easy Meetings plugin.
Or 'Sc meetings' if you have Polls and Questions For Confluence
Enter Question you want to ask to your team, and a unique text key for this macro.
Move the mouse over the profile (in our example, the green rectangle 'Sarah Kepler'), a text input appear, click inside and select a date time. A column appear with entered date time.
You can remove this column, by placing the mouse over time section of the column and clicking the remove icon.