Locking customer account in backoffice

Hi! Currently there is a checkbox flag wether or not the account is locked under the Litium login tab while in edit mode on a customer. how do I actually go about setting this flag? Thanks in advance.

Litium version: 5.5.3-patch-1802191729

I tried to do the same as an Admin but it seems it’s not working correctly so you can report a bug on this please.

Will do. Thank you