For example if i have 10 scenarios i want the test to run starting scenario 1 then 2 then 3 automatically. how can i do that
A Neoload run consists of one scenario, you could create a batch file (Jenkins Job, etc) and have 10 command line calls...
NeoloadCmd ... -launch "Sc1"
NeoloadCmd ... -launch "Sc2"
You could also create one scenario with 10 populations configured to be executed sequentially when the previous one is completed. You can check population advanced options for more details.