How can I change the orientation of the second ipt when I`m using combine command?

And the second

I prefer to use this way :

- Create 2 separate parts
- Create a new assembly file and insert them into assembly file
And arrange by constrain command. save it.
- Finally create new part and use drive command to insert assembly file
into the part file

USE DRIVE COMMAND AS I SHOW IT ( see picture)

Note : if you change any part's situation in assembly file the last part will update automatically.

HAVE FUN.