To check the number of leaves available with you, just type balance to the app.

 The balance for each leave will be displayed along with additional details like  "Carry forwarded", "Days Taken", "Accrued" and the "Annual count" etc.

The leaves for which the accruals have not been set, will be displayed at the end under "Leave types with unlimited balance"

As a manager, you will have access to the leave balances of any member in your team.

Just type balance @username to the app to access that user's leave balance information.