JMeter: Load test – how to separate the ramp up, actions and ramdown actions in a jmx script

Currently, my scenario is set as below:
* Login
* Loop Controller – Business process such as create a quote or application
* Logout

But If I have to Make sure that Login and logout runs once per user and the Business process runs multiple iterations for a particular Period(Say 1 hour) , how do I handle this.?

Thanks in advance:)

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