# New installation

## On-Premisis

### Publish Extension

An extension can be published using the NAV Administrations Shell. To do this, run it as administrator. With the following command the extension can be published:

{% code title="Powershell" %}

```powershell
Publish-NAVApp -ServerInstance [Your Serverinstance] -Path [Path to the extension]
```

{% endcode %}

{% hint style="info" %}
When entering your data, the square brackets must be removed.
{% endhint %}

### Install Extension

After you have published the extension, you can install it. To do this, execute the following command in the NAV Administration Shell:

{% code title="Powershell" %}

```powershell
Install-NAVApp -ServerInstance [Your Serverinstance] -Name [Your demandPlus+ Extension]
```

{% endcode %}

{% hint style="info" %}
When entering your data, the square brackets must be removed.
{% endhint %}

## SaaS

If you use Business Central as SaaS, you can install demandPlus+ directly through [AppSource](https://appsource.microsoft.com/de-de/product/dynamics-365-business-central/PUBID.brenkel_solutions|AID.demandplus|PAPPID.0407638e-a9ed-439d-81d0-f34b11ef8bf7).