How do I book a follow-up event for my client during the current event on the meetings page?

I am a therapist. At the end of the session, I want to already book the next session. Because it is more convenient for my client and also because I am more certain that he or she will come back.

I used to do this from the meetings page by using the link ‘schedule new meeting’, so I just had to choose a date and all data was pre-filled in the form. This link is now no longer available and it seems that the ‘book follow-up meeting’ is not yet available as the current event is not finished.