Hsn summary gstr1 b2b and b2c details

Hi

I am a proprietor of a small business firm who has been filing returns.quarterly - regular.

I have 2 queries

1 - I have missed to enter the documents details of july and august last quarter,i did not find any option to add these invoices in amendment option this quarter.

So what can be one for same?

2. I have query regarding the HSN summary.

Do I enter HSN summary of only B2B invoices issued or all invoices including B2C ?,I have raised all invoices B2B & B2C with corresponding HSN codes.