The best way to achieve this in Xodo is as follows:

1. Open the template file.

2. Click Save a Copy from the overflow menu and click Identical Copy from the sub-menu to create a copy of the file.
Follow the prompted flow and you can give the file a new name.

The newly saved copy will automatically be opened and selected in a new tab. You can edit this copy as you wish.

When done with the copy, close it and go back to the template file.

Repeat Step 1-3 to create another copy.