Right click the selection and choose Photo Gadget Pro – Rename option.
Enter renaming rule into "Rename mask" textbox. It is usual to use some meaningful words that describe the whole series and of course add a counter.
Check the preview table to see what you will get as a result.
Click Rename to complete the operation.
Notes:
Special symbols you may use to compose renaming rules include [C] for counter, [YMD] for current date, [HMS] for current time and [N] for original name.
You can control the counter's start, step and number of digits.