Repeating Fields Help

I am attempting to create a list of employees and tie this to the training calendar that we currently have. How, can I create a repeating field type in the newest version of the online SharePoint. All the videos I find online are outdated. 

The closest thing from those outdated videos that I found that would work for me is: https://www.google.com/search?newwindow=1&rlz=1C1GCEU_enUS842US842&sxsrf=ALeKk0080zDb72fusMIGPHWqwEka7diWoQ%3A1584972678477&ei=hsN4XsvUHKOl_QbfwqPgDQ&q=repeating+field+in+sharepoint+list&oq=repeating+field&gs_l=psy-ab.1.6.0l4j0i22i30l6.59384.65511..71464...7.2..0.103.1844.18j4......0....1..gws-wiz.......0i71j35i39j0i273j0i131j0i67j0i10j0i13.zk5eH0pXwPU#kpvalbx=_z8N4XoLOCY2m_Qa8jYGwAg41