### Context

The original feature to Primerise the Relations tab (<mention class="mention" data-id="58345" data-type="work_package" data-text="#58345">#58345</mention>) did not include options to add children via the &quot;+ Relation&quot; button, as it was considered out of scope. A later feature (<mention class="mention" data-id="60273" data-type="work_package" data-text="#60273">#60273</mention>) added this functionality, since it was missed by quite a few users.

### Steps to reproduce

* Go to any work package and click on the Relations tab


### What is the buggy behavior?

Begin of the deletion In the dropdown menu that appears when you click on the &quot;+ Relation&quot; button:

End of the deletion * Begin of the insertionThe idea of addingEnd of the insertion Begin of the deletion &quot;Existing child&quot; asEnd of the deletion an Begin of the insertion&quot;existing child&quot;End of the insertion Begin of the deletion optionEnd of the deletion doesn&#39;t make Begin of the insertionsense as an action; theEnd of the insertion Begin of the deletion sense. TheEnd of the deletion related work package is only a child once it is Begin of the insertionadded. WhatEnd of the insertion Begin of the deletion added; whatEnd of the deletion the user is doing is adding an existing work package as a Begin of the insertionchild. There are two place it is incorrect:

* The term &quot;Existing child&quot; in the dropdown menu that appears when you click on the &quot;+ Relation&quot; button.

* The &quot;Add existing child&quot; option under embedded work package tables.


End of the insertion Begin of the deletion child


End of the deletion ### What is the expected behavior?

* Rename &quot;New child&quot; → &quot;**Create new child**&quot;

* Rename &quot;Existing child&quot; → &quot;**Child**&quot;

* Use existing translation key `work_package_relations_tab.label_add_child_button` for the new label) Begin of the insertion

* Rename &quot;Add existing child&quot; embedded work package tables (Angular) → &quot;**Add child**&quot;

* Update translation key `js.relation_buttons.add_existing_child`&nbsp;End of the insertion


### Screenshots and other files

Begin of the insertion**In the Add relation drop-down:**

End of the insertion <img class="image_resized op-uc-image op-uc-image_inline" style="width:335px;" src="/api/v3/attachments/382454/content"> Begin of the insertion

**Under embedded work package table:**

<img class="image_resized op-uc-image op-uc-image_inline" style="width:508px;" src="/api/v3/attachments/385071/content">End of the insertion

### Environment information

**Community**
**OpenProject 15.4**

**Browser:**
Firefox Mac

**Language**
EN