The amount of paid vacation depends on if you have worked:

Less than one (1) year:

You get one (1) day of paid vacation per month worked by the end of the reference period, up to a maximum of two (2) weeks.

For example, you started working for your employer on July 1. The reference period is January 1 to December 31. You will have worked six (6) months by December 31, the end of the reference year. So, you can take six (6) days of paid vacation.

Between one (1) and five (5) years:

You get two (2) weeks of paid vacation if you have worked for the same employer between one (1) and five (5) years at the end of the reference year.

You can also ask to take one (1) more week of vacation without pay.

More than five (5) years:

You get three (3) weeks of paid vacation if you have worked five (5) or more years for the same employer at the end of the reference year.

The general rule is you must take your vacation all at once. You can split your vacation weeks if your employer lets you.