Regarding Ordering and Billing with One software with two machine

[JTRTech]

You need to use SQL Express rather than LoclalDB and connect each machine to use that DB.

SQL Express 2014 Installation - [BONUS] How to Convert from CE to SQL Express

Microsoft SQL Express 2014 [SQL Express 2014 Download Link][1] Versions Available Express 32BIT WoW64\SQLEXPR32_x86_ENU.exe Express 32BIT\SQLEXPR_x86_ENU.exe Express 64BIT\SQLEXPR_x64_ENU.exe ExpressAdv 32BIT\SQLEXPRADV_x86_ENU.exe ExpressAdv 64BIT\SQLEXPRADV_x64_ENU.exe ExpressAndTools 32BIT\SQLEXPRWT_x86_ENU.exe ExpressAndTools 64BIT\SQLEXPRWT_x64_ENU.exe LocalDB 32BIT\SqlLocalDB.msi LocalDB 64BIT\SqlLocalDB.msi - MgmtStudio 32BIT\SQLManagementStudio_x86_ENU.exe - …