Click Add to the right of the Layers label and then type details associated with section to add above the log. Note that multiple zones with different parameters can be added above the log.

Specify the seismic units.

Click either of the following:
Tie Depth Point to Time - to display the Tie to Datum dialog box where you specify the point at which to tie the sonic log to the seismic section, which differs from the Time Datum Properties dialog box where you merely push the sonic log deeper.
Convert to Log Data - to display the otherwise invisible log data at the top of the log in the main display.

Click either of the following:
Add - to create a row where you add zone details in the layer display pane at the top of the dialog box.
Delete | All - to remove the layers from the layer pane.