> ## Documentation Index > Fetch the complete documentation index at: https://learn.nexudus.com/llms.txt > Use this file to discover all available pages before exploring further. # Availability and check-in rules > Control where, when, and by whom a pass can be used, and how Nexudus chooses which pass to use when a customer checks in. ## Overview A pass's **Availability** tab decides where it can be used, which customers can use it, and at what times. Together with its **Use priority**, these settings decide which of a customer's passes is used when they check in — and whether they can check in at all. ## How to access Open a pass from **Inventory → Passes** and go to the **Availability** tab. Availability settings for a pass ## Locations Under **Select the locations the pass can be used to check in**, leave the field empty to allow the pass at its own location and every location below it in your network — shown as *\ + child locations*. Select specific locations to allow it only there. If the pass's location belongs to a network, a callout offers **Make pass available across \**. This moves the pass to the network location so it can be used at every location in the network. | Pass belongs to | Locations selected | Valid at | | - | - | - | | London (network) | None | London and every location under it | | London (network) | London East | London East only | | London East | None | London East only | ## Customers Under **Select what customers can use this pass**, choose: * **All customers** — anyone holding the pass. * **Contacts** — customers without an active contract. * **Members** — customers with an active contract. Optionally pick plans, so only members on those plans can use it. A customer can hold a pass they're not allowed to use — for example a members-only pass after their contract ends. It simply won't be valid when they check in. ## Available times By default, a pass can be used at any time. To limit it, choose **Mon-Fri**, **Every day**, or **Weekends** and draw the times on the weekly grid, or **Always** to clear the limits. A pass available on weekdays from 9am to 5:30pm A pass is only valid if the check-in starts — and, when known, ends — inside its available times. If a customer is still checked in when the pass's time runs out, they're checked out automatically and Nexudus tries to check them back in with another valid pass. See [Automatic check-out](/platform/operations/check-ins#automatic-check-out). ## Which pass is used When a customer checks in, Nexudus looks for a pass that's valid at that location, for that customer, at that time, and that still has time left or hasn't been used. A day pass already used earlier the same day can be used again. If several passes are valid, the one with the highest **Use priority** (set on the **Pass details** tab) is used first. Between passes with the same priority, Nexudus prefers a pass already used today, then passes limited to particular locations or plans, then the cheapest. See [How a pass is chosen](/platform/operations/check-ins#how-a-pass-is-chosen) for the full order. If no pass is valid, the check-in fails — unless [pay as you go](/platform/billing/time-passes/pay-as-you-go) is set up, in which case a pay-as-you-go pass is used. Give pay-as-you-go passes **Low** priority and passes from plans **Normal** or **High**, so customers always use what they've already paid for before being charged extra. ### Day passes and time-based passes at check-in * **Day pass** — marked as used when the customer checks in. They can check in and out as often as they like until the daily cut-off time set in **Settings → Features → Check-in settings**. * **Time-based pass** — the time spent checked in is taken off the pass when the customer checks out. Check-in and check-out times are rounded to the nearest 15 minutes. If the pass runs out while they're on site, they're checked out and Nexudus tries another pass. ## Related * [Passes](/platform/billing/time-passes) — creating and managing passes * [Pay as you go](/platform/billing/time-passes/pay-as-you-go) — charging customers without a pass * [Check-ins](/platform/operations/check-ins) — failed check-ins, plan limits, and automatic check-out This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.