[TYPO3-seminars] Registration to seminar not possible

[Torsten Allar]

Hi community,
after installing and configurating seminars (as I think correct so far), I am not able
to register to an event.
The "seminaranmeldung" shows "Step 1 of 1" instead of "Step 1 of 2".
The configuration check warning shows.

The specified number of clicks does not correspond to the number of the first and last registration page. Please correct the values of numberOfClicksForRegistration

What happens there? What should I have to configure?
Any ideas?
Greetings
Torsten