Symbol for positive ovulation

Bailey • Married, age 33, gestational carrier for best friends
Can we get a symbol on the calendar showing the day we got a positive OPK? Or maybe have that day b a different color?
​I was scrolling back a couple months to see if I was the same exact day or if it varied. I have to go into my log to see when I selected a positive result for all previous months.
​Not the end of the world if u can't, just thought I would ask :)