I'll assume that you have a host connection defined on a HIS Server that is able to establish 3270 sessions. Creating a LUA LU is the same as creating a 3270 LU. Open SNA Manager, go to one of the host connections that is currnetly defined, richt-click the
connection name, then click New and then Application LU (LUA). a 3270 LU Properties dialog will be displayed. You will enter a LU number to match a LOCADDR value defined in the PU definition in VTAM and then give the LU a name.
After the LUA LU is created, you would assign it to the TN3270 service in SNA Manager to have a TN3270 LU.