L1NDA provides the possibility to add the amount of days you wish to work in a week. In case it doesn't matter which days you work but you'd like to work maximum 3 days a week due to a busy week at school.
You can find this functionality underneath the week number on the web version:
Not all L1NDA accounts enabled this functionality, please ask your manager in case you do not have this option. Furthermore, you can only add this in the future. In the current week you do not have this possibility anymore.