According to Botha et al$.(2020$:$45),$ Total Quality Management $($TQM$)$ is a key management tool to ensure long$-$term success through customer satisfaction. By focusing on customer satisfaction in the internal value chain of the organisation, i$.$e$.$ providing and rendering services to colleagues within the organisation, how would you, as a manager, apply the principles of TQM to ensure very high levels of internal customer satisfaction?