Hi,
The GP Tool Enable COGO, adds the required attribute fields to a line feature class.
On the View tab click the Geoprocessing button:
On the Geoprocessing pane, click in the Search box and type COGO:
Start the Enable COGO tool
For the Input Line Features browse to the feature class:
Click Run.
After the feature class is COGO Enabled drag and drop it onto a map. When the new layer is created it detects the COGO fields and automatically applies specialized labeling and symbology for the new line layer.
ArcGIS Pro 2.6 introduced a new tool that adds the ability to Split lines into COGO lines: https://pro.arcgis.com/en/pro-app/help/editing/split-lines-into-cogo-lines.htm
If you select a COGO line after its split, and open the Attributes pane, using the button on the Edit tab, then you can copy and paste the value from there: