You can complete the activity settings and description.
Steps
Click Business process modeling.
Click the Business processes tab.
Click Edit hierarchy.
In the tree, select 'a node'.
Click the Activities tab.
In the list, find and select the desired record.
Click Edit.
Close the page.
Notes
You can also edit activities from the:
Activities page.
Flow previews: click an activity on the flow.
Flow design page: select an activity and click View details.