I want to make a One-to-many connection or relation...is there an Option to connect a line (not a Column!!!) with some datasets at the same position...I uploaded a picture which showx exactly what I want to do but there ist no description for this approach...I tried already the connection function in Pro but its just for the column variant...maybe I should regroup the fields first?
It is called a "relate" in either arcmap or arcgis pro
see the section
Relate the attributes in one table to another
The this as well