You can find the point of intersection between two infinite lines from existing points.
After an intersection is found, you can save it by specifying a new point number.
To calculate an azimuth/azimuth intersection in the Survey Command Window
To calculate an azimuth/azimuth intersection, using the survey command language
AZAZ [point 1] [azimuth 1] [offset 1] [point 2] [azimuth 2] [offset 2]
NE 1 100 100
NE 2 200 200
AZAZ 1 50 10 2 183.3333 -20
! INTERSECTION # 1 NORTH:186.991377 EAST:219.229524
An intersection is located between an azimuth of 50.000 drawn from point 1 with an offset distance of 10 to the right, and an azimuth of 183.3333 drawn from point 2 with an offset distance of 20 to the left.