One-to-many connection or relationship

[A_n_d_r_e_a]

Dear Community,

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?

Thanks forward!

Greetings,

Andrea

[DanPatterson]

It is called a "relate" in either arcmap or arcgis pro

Overview of joins and relates—ArcGIS Pro | Documentation

see the section 

Relate the attributes in one table to another

The this as well

View related data—ArcGIS Pro | Documentation