I am trying to make a repeating in a Nintex Form (using online version) as easy as possible for the end user. I want to allow user to select "Item A" from drop-down "Item Category", and then another drop down would change depending on which "Item" has been selected. For example, with "Item A" selected, only "Component A", "Component B", and "Component C" will be available for selection in "Item Component", while if "Item B" is selected, only "Component D", "Component E", and "Component F" are available for selection.

Hopefully I have explained this enough. A step-by-step would be much appreciated!