I mean both. Is it possible to send the calls during the holiday directly to the IVR HOL or do you have another option. It would be great if I can automate this process.
When a holiday is triggered the 3CX will go into out of office hours. If the option "Play holiday prompt when it's a global holiday " under your trunk settings is enabled then all calls will be diverted to the HOL IVR. If not then calls will follow the Out of office hours destination.