Princess Kate finds the comparison of her workload to other members of the Royal Family’s number of engagements “irritating”, according to a source. The Princess of Wales has received some criticism regarding the lack of engagements she undertakes compared to older members of the monarchy. Kate has chosen to focus on selective causes that are close to her heart alongside raising her three children at the same time. A source told the Mail: “What the court circular numbers don’t show is the hours and hours she spends with the team designing the programmes you see in public. WATCH NOW: Royal Fami…