Column Total for Hours (Time) on Invoice

[rossasaurus]

Howzabout a tag to give a column total for Hours(Time) on my invoice?

I'd like to see the total hours on my invoice with a quick glance(without doing the math).

Forgive me if it's there someplace already; I am a geezer so I miss stuff sometimes.

In the Manual there's an invoice image which shows just this time total, but there's no tag in the list of tags which does this.

thanks
Ross