Hi - I really hope you can help...

I have a table that lists multiple rows of projects across a timeline by day
(columns). For each project there is 4 stages. Each stage per day involves
a certain number of hours of work. My ultimate goal is to - create a way of
automatically summing the number of hours of work per project stage per day.
Knowing that in one day there is numerous projects at different stages. Is
there a formula or method that will enable me to do this???

My only thought has been to be able to create a formula that would
automatically sum numbers in a column 'per day' that matched a certain colour
or format (representing each project stage), but I cannot seem to work out a
SUM formula that would allow me to do this for each day.

Can you please tell me what I could do? I'm not very skilled at writing
macros, but can create them if you tell me what I need to do...

Many many thanks in advance and I hope this helps others as well