Log in on the collaborators app.

Click on 'My Availability' in the main menu.

Select the date for which you want to enter your (un)availability. You arrive on the following screen.

Depending on the settings of your employer, you can now select whether you're (un)available for a whole day, for a specific day part or even for a specific period of time.

Select 'Available' or 'Unavailable'.

Enter a period of time if necessary.

Select an end date if necessary (when you're (un)availability lasts longer than one day).

Enter a remark if necessary.

Enter a repetitive (un)availability if necessary.

Click on 'Confirm'.