AppSheet, Google

Check if input is greater than 2 char and contains a space

AND((LEN([_THIS]) > 2), CONTAINS([_THIS], " "))

Or, And, In, Not, If

OR(USERSETTINGS("Singer")="Anita L", USERSETTINGS("Singer")="Anita L.")

AND(ISBLANK(USERSETTINGS("Singer")), IN("Karaoke",ActiveSession[Session]))

IN("Karaoke",ActiveSession[Session])

NOT(USERSETTINGS("Singer")="R Bas")

IF(IN(Context("View"),List("JOIN QUEUE")),"Submit Song","Save")

upper(CONCATENATE("#",SUBSTITUTE(upper([Name]), " ", "")))