This is the documentation for ConfiForms Server/Data Center app
However, this might also work for ConfiForms cloud and in most cases it does. But please see this page to understand the differences between server and cloud versions of the ConfiForms app.
Using "Generate next number" IFTTT action to have a sequence number running from 1 every day
See also Using generate next number IFTTT rule to see how "Generate next number" can be used