# Creating a Check

To create your first check open the Check Sheet app from one your spreadsheets as described in [Getting Started](https://documentation.checksheet.app/getting-started).

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You can then edit one of the example checks we've provided or click the green `Add Check` at the bottom of the app. If you have already created a check in this spreadsheet you'll see a green `Add` button at the top of your list of checks.

You'll then be presented with a blank form as shown below that allows you to enter the details of your check.

A check is made up of the following properties:

* **Name**: The name of your check, this will be shown in notifications
* **Sheet**: The sheet which contains the data you want to check
* **Range**: The single cell or range of multiple cells you want to check, specified in [A1 notation](https://developers.google.com/sheets/api/guides/concepts#a1_notation)
* **When**: The set of cells that must match if the range contains multiple, not visible for single cell ranges
* **Is**: The condition [condition](#conditions) that must be met for your check
* **Value**: The value you expect your condition to match against, it can be one of these [types](#values) and isn't visible for some conditions

A check can have many [notifications](#notifications) which have the following properties:

* **For**: For checks that contain a range of multiple cells this controls whether a notification will be sent for just the first match this is found or for every new match.
* **Send**: The [type of notification](#notifications) to send
* **Target**: The location the notification should be sent to, it can either be a static value such as an email address or a [dynamic target](#dynamic-notification-targets) i.e. a value retrieved from your spreadsheet