I have included 4 Thread groups in one test plan and recorded script for all thread groups . As all ALL thread groups contain login script , so can i record time for first request of login from all the thread groups ? and then another 4 users entering system and login again and time is recorded -> this i have to do for 100 threads :::: first 4 users come then other 4 come and perform login .please tell if anyone could solve my issue .