If you would like the invoice templates duplicated to a New account you will need to go to settings/my invoice templates on your main account then click on the little spanned next to the new button, the below screen will pop up click on export invoice templates.
Once you have exported the templates, go to the new profile, click on settings/ my invoice templates click on the little spanner and then click on the choose button, select the file that you just downloaded then click upload, it will pull the data to the system. Click on Import to import the invoice templates.