# Set up Security
**Next Best Action** has the following security roles:
{% tabs %}
{% tab title="Next Best Action Administrator" %}
The Next Best Action Administrator can configure and modify Next Best Action settings as needed.
{% endtab %}
{% tab title="Next Best Action User " %}
\
The Next Best Action User can access and use the recommendations generated by the system and take actions on records. They cannot create or modify configurations.
{% endtab %}
{% endtabs %}
{% hint style="info" %}
**Note: It is necessary to assign any one of the above security roles to use Next Best Action solution.**
{% endhint %}
### Using Power Platform
Here are the steps to assign security roles to CRM users:
* Go to **Advanced Settings** → **System** → **Security** → **Users**.
* Select **user** → **Manage security roles**.
* Click on any one of the **Next Best Action** security roles as per your business requirement → Click **Save.**
### Using Classic UI
Here are the steps to assign security role to users.
* Go to **Advanced Settings** --> **Settings** --> **Security**.
* Select **Users.**
* Select user --> Click on **Manage Roles.**
* Click on any one of the security roles --> Click **Ok**.
