1. He orders Juliet to marry Paris on Thursday. This is after Juliet's refusal to marry Paris and her threat of suicide. Capulet is furious and sees the marriage as a way to bring joy back into his life and end the feud with the Montagues.
2. He instructs his servants to prepare for the wedding. This is a continuation of his previous order, ensuring that the marriage will happen as planned.
Therefore, Lord Capulet's orders in Act 4 are focused on forcing Juliet to marry Paris.