Global Hours - Is there any reason why they cannot be modified on the fly?

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Would like to know why one has to delete then recreate.

 

[ChrisC_3CX]

That is just the way it is currently designed. There is a post in our ideas section about it, maybe you could upvote it to help push it up the list:
https://www.3cx.com/community/threa...-modify-directly-beside-delete-and-add.81801/