Hi David,
Thanks for your suggestion.
This could be added to the provisioning module you are using, either as a custom button array and/or as a custom page:
https://developers.whmcs.com/provisioning-modules/supported-functions/
https://developers.whmcs.com/provisioning-modules/client-area-output/

Your screenshot doesn't appear to show one of our official modules, so I'd suggest speaking to the vendors so they can consider adding this.