It is a FIS/Relius document. It does have a section for the EACA but this is auto enrollment with auto escalate only so I am unsure those specific rules will apply for this purpose. Below is the section of the plan document outlining affirmative election under the EACA. Based on this, I think they could elect to cap the auto increase if this also applies to vanilla Auto Enrollment/Increase.
(viii)Effect of Affirmative Election. A Participant's Affirmative Election continues in effect until the Participant
subsequently revokes or modifies his or her Salary Deferral Agreement, or the Affirmative Election expires. A Participant
who makes an Affirmative Election is not thereafter subject to the Automatic Deferral or to any scheduled increases thereto,
even if the Participant later revokes the Affirmative Election or the Affirmative Election, unless the Participant is subject to
the EACA. In addition, a Participant who is subject to the EACA provisions who revokes his or her Affirmative Election or
whose Affirmative Election expires, will be deemed to have made an Affirmative Election to have no Elective Deferrals
made to the Plan.