Step 1 - go to management console > batch job configuration> click export execution for generating .bat file for each jobs (It will generate a .bat file in the install directory )
Step 2 - Write a script exec('cmd.exe','<dir>/file.bat',8); and place after the first job to call the second job. Place another script for the third job in second job like that you can go on.
Other option is if the jobs are not dependent, then schedule using management console to run at one time. But how big is the job?