M any use Excel for basic tables, but you need to go beyond simple sums. If your formulas are getting clunky, conditional ...

David Nelkin shares the secret of turning enquiries into lifelong patients – and why it might be the missing piece in your practice growth.

You’ve probably used SUM a thousand times. Everyone has. SUM is fine for school assignments and tiny tables, but in the real world, it’s a blunt instrument. If you want totals you can actually trust, ...