Expiry Alert limited to a single date

I can set an expiry alert (nice addition BTW), but to only one date. Is that intended?

Imagine this scenario — you buy an important item on Amazon.
You create a secure note with a date field to document the purchase date.
Amazon lets you know you have date by which you can return or replace the item,
so you create a date field for that.
The item comes with a 5-year warranty, so you create a date field for that too.

At this point, 1Password is offering to apply an expiry alert to any date added,
but as soon as you apply it to, say the return deadline date,
it takes away the ability to apply an expiry alert to the warranty expiration date
just like Lucy yanks the football away just as poor ol' Charlie Brown goes to kick it!

Is there a way around this, or is that a designed limitation? If so, why?
I am running 1Password for Mac 8.11.1 under macOS Sequoia 15.5.