Check out example codes for "unity c# run a command then wait". It will help you in understanding the concepts better.

Code Example 1

IEnumerator placeholder1() // weird syntax for this but its needed.
    yield return new WaitForSeconds(SECONDSHERE); //this is were the wait will happen. so position it in your func where you want to wait.
} // if this returns errors its most likely because you need to include the  yield return new WaitForSeconds
// if this still return errir check that you didnt clean up the tags at the top because you need the two using System.Collections; and using System.Collections.Generic; tags. So if you got rid of them just add them back.

//now we need to call the func in a void or a public void if we want to acces it outside our script.
public void placeholder2() //this can be called using a button or another scipt etc.

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