# Filters

This is a very powerful feature on our platform. Filtering helps you find the objects (people, things) via a way of adding parameters to your filter. This allows you to filter VERY fine-grained.

Afterwards you can use that filter for multiple things like [automating](/event/general/filters/automate.md) rewards or tags, sending [bulk emails](/event/communication/bulk-email.md) or [SMS](/event/communication/text-messages.md), exporting the data to CSV, taking [actions](/event/general/filters/actions.md) on the resulted objects, ...

## Create

Assign a filter to one of the many categories:

* [Members](/event/accreditation/attendance/members.md)
* [Associations](/event/planning/groups.md)
* Association leaders
* [Form responsibles](/event/accreditation/lists/forms.md)
* [Form attendees](/event/accreditation/lists/forms/attendees.md)
* [Form vehicles](/event/accreditation/lists/forms/vehicles.md)
* [Wristbands](/event/accreditation/wristbands.md)

{% hint style="warning" %}
Once created you will see that all of your possible objects are in the result of the new filter. This is because you **need to create parameters before the filter actually starts** doing some actual filtering.
{% endhint %}

## Parameters

Creating a new parameter will show you a menu of possibilities. Make a choice of what you want to achieve with your filter and pick it. 

<details>

<summary>Examples of parameters</summary>

* was born between dates
* has or hasn't got a valid bank account number
* has a job on at least one of these days
* double confirmation page open
* has (or hasn't) got a certain number of substations as preference
* has checked in on days
* has rewards assigned
* hasn't got tags
* has certain comment rating
* has downloaded ticket
* has signed (or not) a certain document

</details>

There are many more options to create parameters.

### AND / OR

When you created a parameter you can add another one. This time you will first have to make the choice if you would like to add an **AND** parameter or an **OR** parameter. These are logical operators.

If you pick **AND**, you tell the filter it should find the people who are in the results of parameter 1 **AND** parameter 2.

If you pick **OR**, you tell the filter it should find the people who are in the results of parameter 1 **OR** parameter 2.

{% hint style="info" %}

#### Example

The result of parameter 1 include `Sam`, `Isabelle` & `Nick`.

The result of parameter 2 include  `Tim`, `Frank` & `Nick`

* **AND**: The people who ended up in **BOTH** parameters, only `Nick` in this case.
* **OR**: The people who ended up in **AT LEAST ONE** parameter, so `Sam`, `Isabelle`, `Nick`, `Tim` and `Frank`.

You can combine many AND and OR operators with many parameters. Make it as simple or complex as you like.
{% endhint %}

{% hint style="warning" %}
For now the **maximum** amount of parameters is **15**. This is a hard limit to ensure the performance of the platform.
{% endhint %}

## Sharing

The results of the filter can be shared with people who do not have access to the filter system. This feature will generate a unique secured URL that can be shared. You have more configurable settings to limit access.

{% hint style="danger" %}
This feature is in BETA and is currently **only supported for Member filters**.
{% endhint %}

{% stepper %}
{% step %}
Open the member filter
{% endstep %}

{% step %}
Click on the title 'Share'
{% endstep %}

{% step %}
Click on the plus button in the upper right corner
{% endstep %}

{% step %}
Fill in all data needed & click on the save button
{% endstep %}
{% endstepper %}


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