how to - jMeter fixed session

Jmeter - how to Any idea, how to lock in one session?

Problem: (page 1)need to test performance of a server where there is a login on the front page, after putting in credentials there is an extra layer(page 2) of protection via captcha after login validation.

Result: I need to login in the page once via login and captcha and then run several tests(GET/POST on several different pages) in one loop using jMeter for continuous use f.e.10min.

How to?: How to lock this one session (fixed) and loop all(pages xxx) the requests(get/post) within that session with the same session id??? Have tried burpsuit as proxy server, but that just still puts through the singular requests that jmeter makes