The Custom Dimension Manager For Google Analytics is a Google Sheets add-on. It lets you update Custom Dimensions in any given Google Analytics property en masse. When updating, new dimensions are created automatically with values from a source data sheet (or using a default value if no value is specified), and for existing dimensions you have the choice to update or skip. The add-on is completely free to use.
This post first appeared on Simo Ahava's Blog - What's New In Digital Analytic, please read the originial post: here