.exe and .nov files can be protected with a password during export, which will be required to open the exported layout. To apply a password, use the Multi-Video tab of the Export Video dialog and check Protect with password. Encrypted layouts are indicated in the Local Files list with a locked icon ().
Note that the layout remains unlocked until the user session ends unless you choose the Forget Password option in the context menu, which closes the layout so that the password will be required to reopen it.
Password protected layouts can be changed like any other layout, but to save changes the password must be re-entered, causing DW Spectrum to re-export and overwrite the existing file.