Find Last Number In Row / Add 1 To Current Cell (if Another Cell In That Column Has Text)

file storage

1. Look at the "Days so far" section

2. Ignore cell C1

3. All the other cells in that row are shaded blue. Look at these.

4. Look at the "Volunteer" row - all the cells in that row are shaded blue. Look at these.

5. Wherever a name - any name - appears in the "Volunteer" row, 1 is added to the previous number in the "Days so far" section and the result is displayed in cell from the "Days so far" row above that Volunteer's name.

6. For example, we begin in C1 with a count of 12 days so far - this was manually entered

7. In cell H5, we see Henry has volunteered 1 day. The total no. of days so far should now be 12+1. Therefore, the number in H1 should be 13.

8. In cell G47, we see Joseph has volunteered 1 day. The total number of days volunteered BEFORE Joseph volunteered is 15 (see cell D43). But now, with Joseph volunteering 1 day, the total no. of days so far should now be 15+1. Therefore, the number in G43 should be 16.

9. what formula l must put in the "Days so far" row (excluding cell C1, which is manually input) to give me the "should be" results predicted in that row? I'm guessing it will be a formula which looks at each row fragment of the "Days so far" row, row by row, right up to the previous cell in that row, all within one formula.

P.S. I just want to leave the "Days so far" row blank, for any columns where there are no volunteers in the "Volunteer" row, so please don't give a formula which inserts zero for days with no volunteer, and then sums the cumulative total.