# Union Merge Annotations

With UBIAI's union merge feature, you can merge the annotations of your team  into the master project. To do so, go to the inter-annotator agreement (IAA) page and click on the union merge button <img src="https://3073024999-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0hqV0hLtifjaqlfkGT7n%2Fuploads%2FT2KxXgnVPqrkdOzs0kWR%2Fimage.png?alt=media&#x26;token=71938ca9-8fd2-469c-81df-9004b897819a" alt="" data-size="line"> on the top left of the IAA matrix.&#x20;



<figure><img src="https://3073024999-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0hqV0hLtifjaqlfkGT7n%2Fuploads%2FWDcF41Uf5OyiAH0eH3G9%2Fimage.png?alt=media&#x26;token=e532cdca-705b-43cb-adbb-e8d73562ad90" alt=""><figcaption></figcaption></figure>

You will be prompted to choose the documents you would like to union merge:

<figure><img src="https://3073024999-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0hqV0hLtifjaqlfkGT7n%2Fuploads%2F70OTf76TSuAMe2mzcrgR%2Fimage.png?alt=media&#x26;token=04fad99c-d87c-4165-ae93-5d9b441e080a" alt=""><figcaption></figcaption></figure>

Once you press on the "Merge Documents" button, a new pop-up window will be displayed, prompting you to resolve any conflict in the annotations before they get merged into the master project.

