Introduction This blogs focuses on how to add defaults to a SharePoint Customized (or PowerApps) form. The list in this demo includes all the column types including managed metadata. The video walks you through the steps in detail, however, this blog with the attached text file contains all the functions incase you want to copy and paste
SharePoint list Here is a screenshot of the SharePoint list, the column types and names used in this demo. You will have to modify the function to match your lists and column names.
Choice type field
Pick a date (for date only)
Pick a date and time
Lookup (The video shows you the list from which the lookup values are pulled)
Yes or No
Formulas This contains the formulas used for the complex ones such as Choice type, User /Groups, Lookups and Managed
Video (This video walks you through the entire process step-by-step)
Conclusion The formula's to add the default values is very similar to the formulas used in the Patch function. You can refer to the links below to see the two blogs I've written for the Patch Function.