Hi,
It depends on which transaction you are trying to get on the device.
If you are using the main LM01, you will have to do configurations in SPRO ->'Mobile Data Entry'.
Here, you can define your own menu, point to your Z transactions for each item and define User Management as well. This, along with the generation of templates for each of every screen that is bypassed during the transaction. Refer thread: http://scn.sap.com/thread/3778185
Let me know.