As a user I want to adjust the time until the next wave starts, so I can run waves in parallel to each other instead of starting a wave as soon as the next one started.
Acceptance Criteria:
There is an input to enter the number of weeks until the next wave starts
The delay is correctly detected, and the next week will start after x weeks instead of the end of the last wave
There is a toggle to deactivate that feature, since some projects will be sequential
As a user, I would like to have input validation on the input form, in order to see if I entered any invalid data (e.g., 0 waves, or negative duration).