When I started testing your app I was unsure of the difference between the three types of schedules. It would be a nice addition to your app if you would go into greater detail about the requirements for each schedule.
A few examples would be that the group size only concerns the seminars, and that the work schedule has to have a worker available for each shift.
When first using your application these things were not apparent to me and it took experimentation in order to realize this.
When I started testing your app I was unsure of the difference between the three types of schedules. It would be a nice addition to your app if you would go into greater detail about the requirements for each schedule.
A few examples would be that the group size only concerns the seminars, and that the work schedule has to have a worker available for each shift.
When first using your application these things were not apparent to me and it took experimentation in order to realize this.