Therefore it was comfortable if I had multiple conditional fields. Is that possilbe? (e.g. his "native language" is "English" and his "foreign language" is "Spanish".)
You can have multiple conditional fields... and have conditional fields that are conditional on other conditional fields... multiple levels deep. Our fields are far beyond the capabilities of any other solution.
Another point is if it is possible that a registrant will be set on the waiting list automatically if he chooses a certain field (e.g. he is older than 35 and therefore he can register from a later date on than others).
No, the waiting list applies on to the event capacity... not any other piece of registrant data.
It was also nice if you could summ up values. (e.g. 2 parent + 1 child = 3 persons)
This is what a group registration is for. You'd enter the number of people for the group, then have a field for each member where they can select parent, child, etc and then give the appropriate pricing for each member.
Can the waiting/active status now be choosen seperatly for every group member?
No, in a group registration, the status applies to the overall registration... not separately for each member of the group.
Can every group member pay for his own?
A group registration has ONE amount for the overall record. Each member of the group does not have a separate amount due or payment status.
Can I add registrants to a group from the back end?
Yes, you can add/edit/delete group members on the backend. If you utilize our User Panel, the group registrant can also login on the frontend and add/edit/delete group members.
Is it now easier to change the waiting/pending/active status (e.g. with one click only)?
You can change the status (active, pending, cancelled or waiting) by going to the edit view of a record and making that change. It's not one-click like changing the payment status as it's not a simple 2 option field like paid or attended statuses are.
When a registrant has already paid and then he changes something in his records that has a fee or a group member is added will the status then change from active to pending again and the regristrants will be asked to pay again?
A user can make changes like this in the frontend user panel if you give them access. It WILL re-calculate their registration if needed. Their status will not be modified, but if the changes cause an amount to be due, the user will be taken to make payment right there for the difference. You can also add in a Change Fee if you wanted.