Anyone knows about a team shifting saas around there?

A tool that could help me to design and automatize a shift schedule for security guards for instance.

Basically I am looking at the following assumptions: - 24/7 coverage - 8 hours shift - 40 annual leaves days per year - 14 days of certified sick and uncertified sick leaves per year. - need for 52 periods of 2 consecutive days off (week ends). - team composed of 3 personnel. - 15 working days of training in the year. - teams of 3 personnel for each shift.

So I could easily answer how many teams of 3 personnel do I need and what type of shift schedule works for that?

Would you have any idea about that? Thanks.