How do I install the networkdays function! Help tells me how to use it but,
it doesn't exist in my system.

Formula as follows: =NETWORKDAYS(A2,A3,A4:A6)

Followed the instructions purrfectly, but alas the only answer I get is #NAME?

Spent over an hour on the formula... I finally did it in 10 mins with my
daughters calculator.

Help for next time!!