Step 1:
Make sure you enable Replay on you settings page.
Step 2:
Go to your session's chart and right click on the date you wish to go back.
Step 3:
Click on "yes, proceed" once you have read the changes this implies.
For more information please watch the tutorial of how the replay feature works. https://youtube.com/shorts/t2Ky75vRc4A?feature=share