The workflow varies, depending on the current mode. Determine the current mode by the kind of input the program prompts you for.
If Base Line Mode is active (the default), you are prompted to select the two points that specify the base line. Then the dialog box opens and you can continue adding the measured sections.
If Point Mode is active, you are prompted to select the base point. Then the dialog box opens and you can continue with either a point or a measured section.
Sample workflow for base line mode:
The construction dialog box opens.
Use
next to the Northing column to identify existing points.