Many Ignition applications/deployments use many device connections with corresponding UDT instances, or with large collections of UDT instances, or with a mix of UDTs and arbitrary tags and tag folders. It is common for there to be repeating patterns for most of this, but with enough odd elements for Ignition's instance creation wizard to be unsuited. (Well, the wizard is awfully simplistic--I never use it.)
With this tool, you can create structures in an Excel workbook that describes all of the device connections, corresponding UDT instances, and arbitrary tag instances, that one might need for a complex application. Using intelligent construction of device properties, UDT parameters, arbitrary tag properties, and initial value overrides in repeating patterns.
The resource includes examples of various such hierarchical structures, both simple ones, and moderately complex ones.