Good... Not sure what e-sign service is in use, but when we add a participating employer, we do an "addendum" (not a restatement) and it requires two signatures - and our e-sign process specifies in advance who needs to sign, and routes the document as specified, automatically. If the same person needs to sign as both, we set it up with signatures in two places, and it can't be complete until both signatures are completed. If it isn't completed with a period of time, reminders go out, and it's set up with an expiration date - and well before the expiration date, someone is reaching out to find out why the document wasn't complete.
Pretty straightforward - and the only problem we had was finishing up cycle 3 restatements (we did about 2200 of 'em) was ONE client who couldn't sign, because he couldn't get internet service or phone service on his skiing trip to the Swiss Alps, and there wan no other authorized signer.... Poor guy..... š