If you place order for Nero 2021 Platinum or Nero subsctipion Platinum versions, you will get a full offline installer. 

The installer allows you to customize the installation settings. You can do by following below steps.

In the first page, please click the right-bottom "Customize" button then you can see all customize settings options in the expanded page below.

Click “Browse” button to select the customized installation path as you want.

Click "Installation Settings" botton to select/deselect which programs you want to install or not.

You can refer below screenshot for detailed operation.

If your product is not Nero 2021 Platinum nor Nero subsctipion Platinum, you will probably get an installer which callls NeroCore. 

It disallows to cusomize settings. You will not get those customize options in NeroCore installer like the full offline installer. 

After Nero Core's installtion, you need to download and install other programs involved in your order from Nero Start->Update. 

You can customize the installation settings for those new downloaded programs before installation. 

Please you do by following below steps: 

Open Nero Start-> Click right-top corner icon "Support"-> Options

In "Install location for Nero Products" section, you can change the installation path as you want.

Please let us know if you have any further problem. Thanks.