How to generat e way bill for composit supply

Register at eway bill site of gst.

https://ewaybillgst.gov.in/Account/EWBUserRegistration.aspx

Enter the invoice details.

If freight is included in invoice, include it in the invoice value.

being composition dealer, no question of gst on invoice.

as gst is paid on turnover under composition

You have to generate e way bill on the basis of bill of supply.