Yes, you can generate a label manually.
Go to WooCommerce > Fastway Label
Step 1, Click:Add Location, Add the Zip Code/ Post Code > Submit Query
Step 2, Add in your Recipient information
Step 3, Add package
Steps 4, Add in all the information into the fields > Submit Query > Save Package.
Once you have filled in all the fields and saved your package, you will be able to click, 'Generate Label'