> For the complete documentation index, see [llms.txt](https://help.tillit.cloud/tillit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.tillit.cloud/tillit/tools/excel-add-in/how-to-install-the-excel-add-in/desktop.md).

# Desktop

### Add Location to Trust Center

In Excel, go to ***File > Options***. You should be presented with a pop-up.

Go to ***Trust Center*** in the side bar, then click the ***Trust Center Settings*** button.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/62ac034acb3c130081c15144/file-RlOpMajvsf.png)

In the next pop-up, click ***Trusted Add-in Catalogs***.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/62ac0403cb3c130081c15145/file-gjjdIcSfpE.png)

Here, we need the shared path for the Excel Add-in. Go to Windows Explorer and find the folder where you saved the Excel Add-in. Right-click the folder (not the file within) and select Give access to > Specific people.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/62ac04cc06aa9755784632ac/file-CVc58fAaF1.png)

Select your username, then click Share.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/62ac05cd1e5b41737b38ed65/file-e9FxknwYGi.png)

You will be provided with a shared path. Right-click, then select ***Copy Link***.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/62ac067c1f353616cdf02dd0/file-aEBefpWLvV.png)

Go back to Excel and paste the path into the ***Catalog Url*** field.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/62ac074df6341f7edc2a5f19/file-XwWjojvjOK.png)

Remove the folder name at the head of the text, as well as the surrounding brackets, to leave just the filepath.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/62ac14bc1f353616cdf02e02/file-sCaND3Ks36.png)

Click ***Add Catalog***. Once added, make sure to tick **Show in Menu**, then click ***OK***.

<figure><img src="https://s3.amazonaws.com/helpscout.net/docs/assets/60208fd212248b2c96d50eeb/images/62ac08781e5b41737b38ed6c/file-SvQ5uAke7V.png" alt=""><figcaption></figcaption></figure>

### Inserting the Add-in

Once you've added the location to the Trust Center, you can insert the add-in.

In Excel, in **Home,** click on **Add-ins**

<figure><img src="/files/5uxYkWcBhgxA4P4gNAAR" alt=""><figcaption></figcaption></figure>

In the pop-up, click **More Add-ins**

<figure><img src="/files/jITMh0jcp3mIS68Wccjp" alt=""><figcaption></figcaption></figure>

Go to **My Organization and click on one of the add-ins** options below.

<figure><img src="/files/fev8A7m9NZHso5O0TYxX" alt=""><figcaption></figcaption></figure>

The add-in is now available in the top-menu of Excel.

<figure><img src="/files/nHXWAv6LFygiDLfzuoRX" alt=""><figcaption></figcaption></figure>