First of all there are two ways to handle lockouts. One you can have the software do it automatically or Two you can do it manually. The first thing you need to do is go to the "setup" tab and then the "gate" page. On this page select the box called "gate key enabled" and hit save. Now you can run the two different lockout methods The first method is automatic. You can set the software up so that it will lock people out automatically each month dependent on many days behind they are. You can find this setting by going to the "setup" tab and then the "gate" page. At the very top of the page there is a field called "Automatic Lockout Threshold". This is where you will set how many days behind you will let the tenant get before the software locks them out and puts them into lockout status. If you use this setting you will get a daily email of the new lockouts that occur or you can go the customers tab and sort the customers list by locked out. The second method is manual. You can manually lock someone out by going to their tenant account and then clicking on the "gate" button. This will take you to a page that has a "lockout" button just for this tenant.