Want to make a Calender with Dropdown List Events(picture) for each Day

I have created an Calander for my sister, so she can record what sport events for the kids on what day. The events gets displayed as a picture.
My Calender works, but I can do the dropdown event only on the first day. It needs to be active for each day. If I change the fisrt day event all the pictures changes to the same thing.
See images for explanation, I will upload my excel file, but it is a bit big... 6mb. What is the file restriction size?
The Calender:
1.jpg
The Picture Events:
2.jpg
The Dropdown list, that fers to the pictures.
3.jpg

Any help in creating such a calender will be much appreciated.