how to use notification step for parallel testing

Hello All,

Can anyone tell me how to use notification step in test stand with multiple main sequence.

for example, i have Test_1.seq and Test_2.seq and expect to start run these two sequence in parallel. but my requirement is Test_1.seq has to complete the execution first and send notification to Test_2.seq, where as Test_2.seq has to wait until it gets notification from Test_1.seq. If Test_2.seq gets notification from Test_1.seq  it can proceed for rest of the testing.

Any idea how this can be achieved in teststand? 

thanks,

kalpana