Urgent: how to show 2 running sum lines in the same plot chart

[Mimii]

Hello!

I created 2 plot charts, each with a line showing running
sum values over time (dates on X-Axis). Now I want to put
both running sum lines in one chart using the same dates
on X-Aixs, and I just can not figure out how.
Please help.

Thanks a lot.

Mimii

P.S.

the 2 running sum lines, each is grouped by different
dates ("SetUpDate" and "FinishDate"); I feel the challenge
is in that how to combine the dates from 2 queries and
make both running sums be grouped based on same date scale.