What is the consequence of a defendant not objecting to the witness support person at trial?

We conclude defendant forfeited his challenge by not objecting below. In People v. Myles (2012) 53 Cal.4th 1181 at page 1214, the court found the defendant forfeited a similar claim where the defendant did not object when the victim-witness advocate accompanied a witness to the witness stand. (See also People v. Stevens (2009) 47 Cal.4th 625, 641 [defendant's failure to object to the support person's presence at trial waived any claim of error from the procedure used].) Even if defendant had properly preserved his objection, there is no merit to his contention.