Move the modeling by offset distance

After completed Mate in assembly file, how to move the modeling by offset distance ?

2 Answers

Right click on the first part you inserted in the assembly, then choose "Float".
Now you can move it freely, or add a mate between its origin and the assembly's origin (distance mate).
I prefer drawing a line in the assembly, starting from the assembly's origin to the offset distance, then mating the origin to its other endpoint.

Thank you for assist, but still can't found the "Float" function.