Import
In addition to loading existing databases, Desktop allows you to import CSV files with the data service Import. This functionality exists as a standalone tool as well and can be accessed at https://data-importer.neo4j.io/ using a secure connection, and also at https://data-importer.graphapp.io/ using both secure and insecure connections. Additionally, the same functionality is built in to the Neo4j Aura console, available at console-preview.neo4j.io.
In Desktop, you can find Import on the sidebar.

This service allows you to drag and drop or browse for your local CSV files.
You need to provide a data model that shows how your data is connected.
Either you can draw the model manually in the model panel of Import or provide an existing model in a .json format.
From the […]
menu in the model panel, you can open existing models, with or without data mapped to them.

If you create your own model or open an existing model without data, you need to map your files to the model. This is done in the right-hand panel. Both nodes and relationships need to be mapped to the CSV file that contains the corresponding data.
When the mapping is complete, you can run the import. With the data in place, you can use one of the built-in tools, Query and Explore, to interact with it.
For detailed information on how to use the Import service, see Neo4j Data Importer.