for each sub report you will need to start with your full data set
create 3 formulas, 1 per criteria you have.
I will assume you want these criteria based on today's date
//current
if date > dateadd('m',-2,currentdate) then 1 else 0
//mid
if date in dateadd('m',-12,currentdate) and dateadd('m',-2,currentdate) then 1 else 0
//old
if date < dateadd('m',-12,currentdate) then 1 else 0
group by client and sum each of these formulas by client
Now you can do group selection (in each sub report) based on the specific criteria
group 3 would be
sum(current,client)>0 and sum(mid,client)=0 and sum(old,client)>0
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