Time Management

Hi All,

I have 2 questions:

(1) I want to configure that 2 different types to leave cannot be clubbed together, e.g. EL and SL cannot be clubbed together.

(2) I want to configure that a particular type of leave cannot be taken more than 'n' number of times in a year, e.g. EL cannot be taken more than 3 times in a calendar year.

How do I configure these? Are these standard configurations?

Thanks in advance.