You need to customize the keys in the keyboard to trigger certain actions. Usually this will be defined as parameters for each key usually it starts with PF1 TO PF12 and PF13 TO PF24 keys. In some installations, the actions designed for PF1 TO PF12 will be assigned the same foR PF13 TO PF24.
All these PFKEYS description are in this member...(SYS1.PARMLIB) Under PFTAB00.
All these are system oriented programmers task and you should have privileges to implement any of the key to trigger desired stroke.
However usually the HOME KEY will be designed to position to start of the cursor at the command line.
Regarding positioning of End of line, it varies from installation to installation. You can use their mouse to position the cursor at the end of the command line till you check the installation defined at your Place