We have a problem managing messages for holidays/exceptional closure.
There is only one trigger associated to non-working hours so we can't display 2 differents messages if we are in holidays closure or in exceptional closure.
We can't add/edit the existing triggers (we can only modify the text-message associated).
Note : we solved this issue using the Power Virtual Agent and Power Automate, but it's not an easy solution to maintain.
Thank you for your help