In most cases it is worth starting a discussion on the mailing list first.
Bugzilla is good for tracking progress and supplying patches, but is unwieldy for longer discussions.
If you have not already done so, you need to register an account first, using the "New Account" link at the top of the
main Bugzilla page:
https://issues.apache.org/bugzilla/
.
Make sure you read and understand the information on the account creation page before signing up.
Once logged in, click "File a bug" and select JMeter from the list
Please set the severity to "enhancement".
Please make sure that you describe the enhancement in sufficient detail. If necessary provide an example use-case.
If you are providing a code patch, also provide a test case, and documentation on how to use the new feature (ideally as a documentation patch).