Gstr 1 query

We are digital marketing company and we need help on offline GST tool. We are using the Excel Template provided by gst.gov.in. 

1) Which tab (b2b/b2cl/b2cs) we have to use to fill for the invoice generated by us to the customer who has the GST number?

2) Which tab we have to fill to get the credit of the invoice ?

3) Where we have to mention the inovices we made to the persion who does not have th GST.

Please help