As the host, you can assign the host controls to another user and leave the meeting. This allows the meeting to continue without you, and the assigned user to have host control over the meeting.
If the original host is a Licensed user, the meeting will continue to run for an unlimited time, even if the new host is a free or basic user.
If the original host is a Basic (free) user, the meeting will be limited to the 40 minute duration, even if the new host is a Licensed user.
https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0067794
