At this time you have to put in a "negative" date instead of the word various. Just allow us to use the word various and will will select if it is long-term or short-term.
Been this way for years. In Lacerte, too. It works. Let's not ask them to break something that works.
I find the entry pretty quickly with this set up
Short Term VARIOUS
Purchase date -0101YY for tax year 20YY
Sell date -0102YY for tax year 20YY
Long Term VARIOUS
Purchase date -010100
Sell date -0101YY for tax year 20YY