Learn how to create a custom function that you define. These custom functions can be reused in other Google Sheets.
More information:
Timestamps:
0:00 Overview
1:01 Start to create a named function
1:48 Function name
2:21 Function description
3:05 Formula definition
3:24 Argument placeholder
4:04 Argument description
4:15 Argument example
4:24 Parts of the new function
5:52 XLOOKUP