Employees are allowed to carry forward unused leave to the next cycle. However, you need to activate the setting in every leave types.
Step 1 - Go to Leave
Step 2 - Click on Settings
Step 3 - Select leave type
Step 4 - Look for Advanced settings
Step 5 - Click on Edit
Step 6 - Enable carry forward leave
Step 7 - Set the maximum number to carry forward
Step 8 - Click on Save
Step 1 - Go to Leave
Step 2 - Click on Settings
Step 3 - Select leave type
Step 4 - Look for Advanced settings
Step 5 - Click on Edit
Step 6 - Enable carry forward leave
Step 7 - Set the maximum number to carry forward
Step 8 - Click on Save

Swingvy tip:
Every leave type will require a separate carry forward setting.
Every leave type will require a separate carry forward setting.