Group 1 - The core viewpoint of the article highlights an increase in confidence among UK business leaders following President Trump's decision to delay tariffs, which has alleviated economic concerns [1] - A survey conducted by the Institute of Directors (IoD) indicates that the confidence index rose from -58 in March to -51 in April, marking the highest level since September of the previous year [1] - The confidence index reflects the difference between optimistic and pessimistic executives, suggesting an overall improvement in sentiment among business leaders [1] Group 2 - IoD's Chief Economist, Anna Leach, noted that the suspension of the most severe tariff measures for 90 days has contributed to the improved mood among business leaders [1]