Event without date – how to?

you can try to use conditional placeholders at settings > formatting then set the start/end date the same day.

https://wp-events-plugin.com/documentation/conditional-placeholders/

Thanks.
I’m not sure where to put these conditional placeholders ??
I assume you’re referring to {no_time}content{/no_time} but where do I use these?

you can put that in the options page at settings > formatting > events

OK, but in this case it’ll work for all events we create, right?
We’d like to set a TBA date for some events only.

yes, it should worked.

this will only apply to events that have no time difference, i.e. an event starting and ending at 1:00

provided your other events have different start/end times, it’ll work