First of all, I do not understand what is meant by the "Mundo" team. An email about any changes in working hours and working days per week should be explicitly mentioned and should not include phrases like "except" and "more than," etc. You have a defined team such as programmers, online staff, or night shift staff. Here, there is mostly no permanent night shift, or there may be changes at any time during the course of the company project work.
Office order related to working hours
1. People in regular day shifts: We have changed the work schedule to 5 days working from ... a.m. to ... p.m. (9 hours per day) from Monday to Friday. We are closed on Saturdays and Sundays.
2. Field staff working outside the office: We have, etc.
3. etc.
Casual Leave: 1 casual leave after 9 months, etc...
I don't understand this casual leave and the 9-month rule. I was in an IT company and joined after gaining much experience. However, after joining, I had to attend to a personal family function at my native place. Here, they talk about no leave, etc. I simply remained absent because this behavior seems inhumane. No doubt, it may be a serious matter for new freshers who need to learn office working methods and seriousness, but for experienced individuals, this doesn't sit well.
I have seen many managers join duty and then announce they are taking a two-month leave, even if it's unpaid, as they believe they need to be there. However, down the line, people exhibit silly behavior.