You would see the leaves in Draft status when the parameter is activated.
You can use the Edit button to edit the leave and provide the missing parameters before you can activate the leave as shown below.
Parameters which need to be setup are -
1. Effective date : you should put the date from which you want to make this
leave available in your company can the 1st January of the current year or from
the date of onboarding of the company (whichever is later).
2. Short Code : for some leave types you might have to provide the short leave
code
3. Initiator and Approver roles
These leaves are not carried forward and weekly off and holidays are always included
in these leaves.