I am trying to setup Data Validity that only allows the user to type in the 11th or 26th of a month as a date in cell A1 (i.e. they type in 4/11/2020 or 5/26/2020 or 3/11/21, etc)
I have tried everything I can think of but just have not been able to figure out a way to do this in Calc (it is quite easy in Excel).
I am aware that I could use a dropdown box for the "Day" part of the date and only allow them to select the number 11 or 26 but I am trying to avoid that if possible because it creates additional complications with what I am trying to do.
Thanks in advance for your time!