Navigate to the Users section and select yourself. Under Call Handling & Forwarding select Custom Rules. Click the + Add Rule button (if you haven't already made one for vacation). If you've already made one, just click the Edit button next to it.
Assuming you hadn't set one up yet, name your rule, and click next. Check the box next to Date and/or Time and then click the circle next to Specific Date Range. I generally set the start date/time to when the office closes on the last day I'm in the office and the end date/time to when the office opens the day I return. Click Next.
Leave Forward Calls selected and click the Call Handling section on the right. Inactivate any of your phones (I only have one) by clicking the switches until they're all gray. Then click the button with vertical dots and choose Forward to Other's Phones and select the person you want them forwarded to.
Then under messages change the Message Recipient to that person, just to be safe.
Don't forget that on the day before you leave for vacation you'll need to set your status to Busy (not Do Not Disturb) and turn off Accept Call Queue Calls. If you select Do Not Disturb we've found that overrides your Custom Rules - which would make all your work for naught. :)
Hope this helps!
