Updating a plan

Good morning,
I thought that a training plan was updated on the athlete’s profile as soon as sessions were added. Is this an option available? In this case, what should I do because I haven’t been able to do it?
I guess the question has already been asked. Can you guide me to posts about this on the forum?
Thanks in advance.

When editing a plan there’s an “Apply changes” button at the top of the window.

Your changes to the plan are saved as you go, but won’t take effect until you press this button.

Thank you for your prompt response.
I hadn’t checked any athlete. As a result, this “apply your changes” did not appear.