I am redesigning a Workflow 2013 to Power Automate and I have this action inside Workflow 2013:
So what this action do exactly? Thanks
The action shown in image you provided Adds Time to Date in SharePoint designer workflows.
|Add Time to Date
|Adds a specific time in minutes, hours, days, or months to a date (Year is not supported), and stores the output value as a variable. The date can be a current data, specific date, or a lookup. The 'Current Date' value returns UTC midnight.
In your case, it is adding number of months stored in Months To Complete column in same list item/row for which designer workflow is running.