Hi Jennifer. 
Two ideas come to mind, but I don’t know the specifics of the template you are using, so you’ll probably want to experiment with them.
Use a template in a PM
The relevant settings would be:
That single event template would appear on the calendar for you and anyone else on the PM, but would not show for anyone else.
Use Reply Template component
I wonder if you could use Reply Template to produce a reusable template. Here’s an example, with a live demo just after:
[wrap=template key="event-template" action="create" title="New Event"]
## Event Details
[event start="2023-07-07 10:00" end="2023-07-07 14:00" status="public"]
[/event]
## Description
...
[/wrap]
Event Details
[event start=“2023-07-07 10:00” end=“2023-07-07 14:00” status=“public”]
[/event]
Description
…
You could put that in a PM or staff only category and use it to create new topics quickly.