Code in Fiddle: https://fiddle.sencha.com/#view/editor&fiddle/281k
How to reproduce this code in Sencha Architect 4?
More precisely, how to add items to column? I found items only in Action columns.
You need to to add custom property to the column. Steps:
items
and click ADD buttonHere it's explained in tutorial https://youtu.be/2wTAdPaG2Xk?t=414, I highly recommend watching whole video, there are some cool tricks.