Explanation:

Step 1: Create a new import project.
Step 2: Specify the project category for the import.
Step 3: Specify the Source Data Format.
Step 4: Specify the target entity.
Step 5: Import the source file to the project.
The import process is done through the Import tile in the Data Management workspace.
Import a data package
* Log into the environment using a login with sufficient privileges (typically this is the Administrator role).
* On the dashboard, click the Data Management workspace.
* Click the Import tile.
* On the next page, do the following:
Provide a name.
In the Source Data Format field, select Package.
Click the Upload button and choose the appropriate package file from the location for the data being imported. This will import all the files from the package.
Click Save, and then click Import.
Reference:
https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/data-entities/data-entities-data-packages