visual studio 2012 - Sum of certain Group Totals -

i'm making crystal report using crystal reports vs2012 show amount of cord ordered cut during date range. i've got working except 1 part , i'm not sure possible.

how report set right this:

1. group 1(date) (ex. 03/13/13)
   
   • group 2 (who ordered) (ex. dan)
     
     • ...details (including cord length)
       
       • length total (ex. dan's total 3/13/13)
   • group 2 (ex. tom)
     
     • ...details
       
       • length total (ex. tom's total 3/13/13)
2. group 1 (ex. 3/14/13)
   
   • group 2 (ex. dan)
     
     • ...details
       
       • length total (ex. dan's total 3/14/13)
   • group 2 (ex. bob)
     
     • ...details
       
       • length total (ex. bob's total 3/14/13)

what i'm wanting @ end able have sum each of our 3 main people , sum other names in report footer, looks this:

total:
dan: ### (total of of dan's cord length totals)
tom: ### (total of of tom's cord length totals)
bob: ### (total of of bob's cord length totals)
other: ### (total of cord cut people other dan, tom, bob)

is there way this, or asking much?

u can sum of 3 people :

insert --> summary --> grandtotal

so u can sum users

for sum of specific group

insert --> summary --> grouptotal

try this...............