After giving the matter much thought and reviewing other situations that have occurred whilst you were away it has become clear that the issue isn't about lack of presentation skills. It is, you believe, more about someone taking responsibility in your absence. The issue is about identifying a suitable deputy to cover your absence. Look into the format of these presentations to see how much of the content can be comprehensively proofed and set so that obvious mistakes are avoided. Take material used in successful presentations on which new versions are modelled. Ensure that the day before large presentations is marked out in everyone's diary to ensure a dry run takes place and everyone is comfortable to present. Start by collecting feedback from Misk and measuring their satisfaction with pitches. Set a standard for all future presentations. Video presentations for review and to provide specific actions for improvement. Ensure everyone is aware these presentations are monitored and reviewed against a company standard.