Today we are going to discuss Record Level Security in Ax 2009. Record level Security button is found in Administration => Setup => Security => RecordLevelSecurity
After that press Cntrl+N to create a record , the wizard will be opened. Click all the tables which you want to create record level security and finish it.
There will be a query button which you can add ranges to it.
This RLS is restricted to particular company only and the RLS is limited to particular group only .
Note :: To arrange restrictions on the particular group use SysQueryRangeUtil class.