---
schema_version: "1"
id: 506e6184ad37ae4734aacb4d49f5391c1b5e273c123ba23628c751df8ac5806d
title: Choose Category Cardinality
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/mktg/264-0-0/mc_pers_catalog_object_cardinality_choose.md
canonical_url: https://help.salesforce.com/s/articleView?id=mktg.mc_pers_catalog_object_cardinality_choose.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 21e1d626b4912d8e2fc2a48550e5c40cb1aa230322ca255cd40673790b8b99c3
description: "Before building your category hierarchy, select which category cardinality you want to use: one per item or many per item."
products:
  - Marketing
  - Salesforce Personalization
release: "264"
---
# Choose Category Cardinality

Before building your category hierarchy, select which category cardinality you want to use: one per item or many per item.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small permission">
        <colgroup>
          <col style="width:50%">
          <col style="width:50%">
        </colgroup>
        <thead class="slds-text-title_caps ">
          <tr class="">
            <th scope="colgroup" class="slds-cell-wrap" colspan="2" style="text-align:center;vertical-align:top;" id="d78977e38">Permissions Needed</th>
          </tr>
        </thead>
        <tbody>
          <tr class="">
            <td data-label="Permissions Needed" class="slds-cell-wrap" style="vertical-align:top;" headers="d78977e38 ">To edit a Category object:</td>

            <td class="slds-cell-wrap" style="vertical-align:top;" headers="d78977e38 ">A role with Catalog Create or Edit permissions</td>

          </tr>
        </tbody>
      </table>

1. From the main navigation, select **Settings** | **Catalog and Profile Objects**.
2. Under **Catalog Object Types**, click **Category**.
3. Select the cardinality option, and click **Save**.
    
    ![Screen capture showing Cardinality options.](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-mktg-mc_personalization-264-0-0-production-enus/16bf1f60-f44c-4260-a56e-f052cfe515a3/mc_personalization/images/mc_pers_cardinality_options.png)