Assistance needed in getting the grand total value in the attached form

[Voyager]

Hi team,
Kindly check the attachment I have a form with few calculated fields (i.e) Total of On job row will be start time - end time for all the rows it work well but I am unable to cumulate the total of all the three totals could you assist?

 

[bob fitz]

Not sure that I understand what you want but perhaps this helps:

 

[Voyager]

Many Thanks Bob,
That worked like a breeze you have sorted out my head ache.

Though I made a small change to the nz function from - I have changed it to +

=Nz([text4],0)+Nz([text14],0)+Nz([text21],0)