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Understanding the Availability Calendar

Tell your organization which days you can work, and how that calendar relates to eligibility.

New Horizon Experience. This article describes the New Horizon Experience. In the Horizon WebRef mobile apps for Android and iOS, New Horizon is already what you see. On a computer or laptop, choose Try the New Horizon Experience from the banner or your account menu. You can switch back from that menu any time.

Both layouts are in use right now. In the Horizon WebRef mobile apps for Android and iOS you see the New Horizon Experience. On a computer or laptop, the older legacy layout stays until you choose Try the New Horizon Experience from the banner or your account menu. Match the steps to the screen in front of you. When a control or rule exists on only one layout, this article says so. The steps below start with the New Horizon Experience in the apps, then cover that older desktop or laptop layout.

This article covers the Availability Calendar in HorizonWebRef. Officials use it to mark days they can work. Assignors use that calendar as one rule when they open Assign. Open it from the main navigation when you are signed in as an official. Use this article when you are updating days, setting a recurring pattern, or asking why someone is eligible or ineligible for a game.

Watch the walkthrough, then use the steps below. The video shows the New Horizon Experience. On a computer or laptop you may still see the older layout described at the end of this article.


Open the calendar

Sign in to HorizonWebRef, then open Availability Calendar from Availability in the menu. On a phone the page title may read Availability. On a larger screen it reads Availability Calendar, with the line Tell your organization which days you can work.

The title card holds two actions. The calendar icon is Bulk Edit (the word appears on a larger screen). The gear is Utilities. A green check near the month means All Changes Saved. While a day is writing, that check becomes Saving.

Availability Calendar on a phone for September 2026. The title reads Availability. An orange ring marks the Utilities gear.

On a computer, the same screen uses the wider layout.

Availability Calendar on a computer for September 2026. The title reads Availability. An orange ring marks the Utilities gear.

How to mark a day

By default, officials are marked unavailable. You choose the days you can work. Quick Toggle is on by default: tap a future day on the calendar to flip that whole day between available and unavailable. On a larger screen, click the day. Tap or click the date number, not the rest of the square, to open Advanced Availability. That is where you set a time window or a note. Days in the past cannot be edited. You can edit up to one year ahead. Past availability is kept for about three months.

While your assignor is filling a weekend, they can lock those days so nobody changes the calendar mid-assign. If a day is locked, you will see a notice, and you cannot edit it until they unlock it. Organization administrators turn that lock behavior on in System Settings with Lock Availability While Assigning.

On a narrow phone month, each day shows a thumbs-up or thumbs-down in the square. On a larger screen the same days show the words Available or Unavailable, or a short time window such as Available After.

Choose one option per day:

  • Available All Day

  • Unavailable All Day (the default; notes are not allowed on this choice)

  • Available After, Available Before, Available Between, or Not available Between (then pick times in 15-minute steps)

Use Notes for extra detail on any choice except Unavailable All Day. The placeholder is Optional. Choose Save Availability when the day is complete. For time-based options, all required times must be set before the day saves.


Recurring days, Bulk Edit, and color

Recurring Availability is under Utilities. It opens the same Advanced Availability form with a date range. Use it when every Tuesday should look the same, and keep that range small. Bulk Edit opens that same form for a range that starts today. You can also tap or click, hold, and drag across a few days to toggle them together.

The Utilities menu on a phone. Print, Block Systems, Recurring Availability, and Help Center are listed. An orange ring marks the gear.

On a computer, the same screen uses the wider layout.

The Utilities menu on a computer. Print, Block Systems, Recurring Availability, and Help Center are listed. An orange ring marks the gear.

Utilities can also include Print in a web browser (Print is hidden in the Horizon WebRef mobile apps) and Block Systems when your organization uses that tool. Help Center opens this article.

Green means available. Red means unavailable. A time window such as Available After still saves on the day. In the assign window, limited availability may show as amber. On the older legacy desktop or laptop calendar, partial days may still show blue.


Calendar Sources and Quick Toggle

Scroll below the month on a phone, or look at the right-hand cards on a larger screen. Calendar Sources has Show Holidays and Show My Games. Turn those On when you want holiday names or your already-assigned games on the same month. They do not change whether a day is available.

Quick Toggle is On or Off. When it is On, tapping or clicking the square flips the whole day. When it is Off, tapping or clicking the square opens Advanced Availability instead. The Instructions list on the page matches that setting.

The lower part of Availability on a phone. Instructions, Calendar Sources with Show Holidays and Show My Games Off, and Quick Toggle On. An orange box marks Calendar Sources.

On a computer, the same screen uses the wider layout.

The lower part of Availability on a computer. Instructions, Calendar Sources with Show Holidays and Show My Games Off, and Quick Toggle On. An orange box marks Calendar Sources.

More than one organization

If you belong to more than one organization, you can edit each calendar separately, or apply a change to all of them when that checkbox is offered. The card heading is Multiple Organizations. The switch help is Save new changes to all organizations. Set your default in Personal Profile under Preferences (not a Preferences tab). Choose Apply saves to all organizations or Apply saves to current organization only.

Organization administrators and assignors can export availability to a spreadsheet from Availability Overview.


Available versus eligible

The calendar is one of many rules used to decide eligibility. You can be available that day and still be ineligible for a game because of rank, a block list, age, groups, or another rule. Assignors should open Assign on the game to see Eligible and Ineligible. Do not call an eligibility miss unavailable.

Assignors can still assign someone who marked a day unavailable. Horizon warns both the assignor and the official when that happens. Use that override sparingly and talk with the official.


Turn the calendar on

Officials mark their own days. There is no extra switch to create the calendar. Organization administrators keep the Horizon WebRef subscription current. If the subscription has ended, officials see Availability Feature Disabled and the line The availability feature has been disabled by your officiating organization.

An official whose account is not Ready sees Account Disabled and cannot open the calendar until an organization administrator marks them Ready. After you assign someone, Lock Availability While Assigning in System Settings can lock that day so they cannot change it during your scheduling work.


If you still see the older legacy desktop or laptop layout

On the older desktop or laptop layout, the calendar may still use drop-down menus on each day and a top toolbar for recurring edits. In the older assigning window, use View Diagnostics or the Diagnostics Table if you are not sure why someone is ineligible. That table is about eligibility, not only the calendar.

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