Open the company settings and click on "Other setup" tab.

Company editing - BangDB

You can either select default or YYMMDD. Default will generate random IDs, However if you select "YYMMDD" - it will create lead ID based on year, month & date.

Once you're done with your changes. Click on Save Company (Draft).

Changes are now saved locally, in order to save these changes on the app. Click on Save.

Company editing - BangDB