To create e-way bill in IOS please follow below steps.
Step 1: Go to bills.
Step 2: Select the invoice and Click on more option.
Step 3: Click on create e-way bill option.
Step 4: Add dispatch and shipping address >> and Add Vehicle number or Transporter ID >> Click on create option.
To see the created e-way bills please Go to home >> Click on E-way bill option.