How to consider sandwich policy only if the leave days include "x" days?

Below is the path from where you can do the same- 

Go to the Time Attend (1) section of the Keka Portal, and click on Leave (2). Then click on the Leave Plans (3) as shown below:

Once you reach the Leave Plans section, select the Leave Plan (1) & leave type (2) for which you want to consider sandwich policy only if the leave days include "x" days

Click on the 3 dots (3) of that leave and click on Settings (4). 

Once you click on Settings, below attached page will appear, but to reach on this page, you need to complete first 2 steps i.e. Accrual & Accumulation and Applying Leave & Approvals.  

Once you reach on the 3rd step i.e., Additional Restrictions, tick the check box of If leave applied is adjoining a holiday, the holiday is considered as leave (1) & If leave applied is adjoining weekly off, weekly off is considered as leave (2) and under that, enter the number of leave includes x days and click on Save & Close (3).

By following this, the settings would be saved for the same.