You can either use the WhatsApp Phone Archiver, which is a separate application to the regular Meta WhatsApp and uses a separate number (which we can provide) to keep business and personal communications separate; or you can use WhatsApp Business, linked to your fixed line number, in conjunction with the WhatsApp Cloud Archiver. This way, the employee would use the consumer WhatsApp for personal chats and WhatsApp Business for recorded work chats.