Would like a simple method to format cells to display both Date & Time.
Currently a date format and time format, but no date-time format, such as yyyy-MM-dd HH:mm:ss.
I waste so much time with custom formats since I more often that not am interested in date and time.
Under the Date Category (in number formatting) , there is already a mm/dd/yyyy hh:mm PM format which might work for you instead of creating a custom format. Same in the Time category.