Navigate to the schedule view. Click the hamburger menu, and select Schedule. It should look something like this on your screen.
Now click the "+" circle to bring up the option to Add Unavailability. Click the "x" button next to the text "Add Unavailability".
Now you should be able to select the days you are not available for shifts, these will turn the colour Green while marking the desired days. To do this tap the days you are unavailable.
Once you have finished click the Save button
Now the shifts will be marked as a blue colour.
You will now receive a response saying Non working day leave request approved, this is an automatic process, so all these requests are instantly approved. In the app notification area it will just read "Unavailable".
Also a phone notification that reads "Non working day leave request approved" will pop up.
Now your manager will know when you aren't available for shifts.
If you need to change your unavailability it's as easy as repeating the process above, making sure you un-check the days that you are now available.
In the following image: On the left was the existing Unavailability, click or tap on the days that are no longer unavailable. On the right you see the changes made, remember to click or tap Save Icon when finished.