create more than one excel sheet based on a template

Hi everyone!

I'm designing a report that selects an Excel sheet in an Excel book (this sheet is going to be used as a template) and fills in a series of data from a table in Navision. For each different register date I have to create a new sheet in another Excel book but based on the initial template. 

I know table 370 Excel Buffer has a CreateSheet function and SaveWorkbook but I don´t know how to continue.

Thanks in advance for your help!