Move shot move photography project

I wonder if someone has a code already.
I dont know how to synchronize a stepper motor and a relay. I want to move my camera which is in a rail and after I move, I want to activate a relay to take a picture.

As of right now I am able to move the camera and activate a relay but both operation are happening at the same time even though I set the timers at different times i.e. 3,4 seconds apart.

Thank you

Hi, jex!

Could you please attach a screenshot of your project so it will be easier for us to figure out what you mean.