In LOLYO, you can set up an out-of-office message to let your coworkers know that you are not available via the app.
Go to your profile and click on your profile status:

Now select Status message.
Enter the text and set an end date. Select the 'Show in chat' option to determine whether the message should also be displayed in the chat.

The out-of-office message is displayed as soon as someone opens your profile via the contact list:

If you select this option, your out-of-office message will also be displayed in the chat window:
