Since the CRTSQLRPGI command does not have this parameter, your best bet is to imbed the instructions in your RPGLE source code as a header directive. Certain compile parameters cann be added to an H-spec line to force these parameters to be used everytime you compile the program. Try putting the following H-spec in your program.
H DftActGrp(*No) ActGrp(‘activation group’)
where the ActGrp is the name of the activation group you want to start this program in.
There are many other compile options you can select from. When you prompt on the Keywords entry field with an F1, this will take you to all of the H-spec directives you can use. The nice thing about these is you never have to wory that the next progammer will compile with the wrong parameters as what is in the source overrides any other in the create command.