The following step-by-step guide was created using ZEN as an example. ZEN core and arivis Pro provide similar functionality.

To access your instance segmentation models trained on ZEISS arivis Cloud from ZEN, you first have to link your arivis Cloud account to ZEN. To achieve that generate a unique access token (i.e., API key) on arivis Cloud and enter it into ZEN. This step only needs to be done once to access all instance segmentation models (for the time that the access token is valid). Follow the steps here to create your access token.

1. Once you've created your access token, open ZEN and navigate to Tools > Options in the top menu.
   
2. Click on arivis Cloud (or APEER in older versions) in the menu on the left.
3. Paste the token you've just copied into the API key field and click OK.
   
4. ZEN is now authenticated to access your instance segmentation models on arivis Cloud.
4. In the left panel, click on the Applications tab, locate the AI Model Store, and click on the arrow to expand it and see the options.
5. Click on Download Models to access your instance segmentation models.
   
6. Select the model version you want to use in ZEN. Then simply click OK. Your model will be downloaded and listed in the AI Model Store.
   

The first time you download a model, all the code required to run the model will be downloaded together with the model. Therefore, expect longer waiting times compared to downloading additional models in the future.