I have this formula that checks Dates in Column I:
=IF($I2<=DATE(2018,10,7),"Base", IF(AND($I2>=DATE(2018,10,8),$I2<=DATE(2018,10,29), "Interest",IF(AND($I2>DATE(2018,10,29),$I2<=DATE(2018,12,17), "Advance", IF($I2>=DATE(2018,12,17), "Sustain", "ERROR!"))))
I want to insert a "Select Case"...