Click on the Settings option in the OpenSpirit dropdown menu as shown below:
 

This dialog is displayed by clicking on the Settings option in the OpenSpirit dropdown menu.

To group imported data items into sub-folders during import, select the Groupings tab.   

Groupings 

This tab can be used to group imported data items into sub-folders during import based on the value of one of the data items' attributes. Groupings can be performed using any attribute of any of the data types that can be imported by the OpenSpirit Adapter.

The None option indicates that grouping should not be performed. All other options in the drop-down list correspond to the attributes of that data type that can be used to perform grouping.

For example, selecting the well bore's Bore Status attribute will cause imported wellbores to be grouped by bore status.

The imported well bores will appear in the Petrel input tree grouped into sub-folders named for each bore status value. The following image shows well bore groupings by bore status. The shut-in, active, abandoned, UNKNOWN, suspended, and temporarily abandoned folders each contain the wellbores that have a status indicated by the folder name.

TIP: Avoid selecting an attribute that is likely to have a large number of distinct values, such as well bore UWI. This can result in a large number of sub-folders that contain few or possibly a single object.

TIB_os-toap_29.0.0_userguide.pdf (downloaded from e-delivery along with .exe)