Which of the following statements is correct regarding custom layouts on a Cisco TelePresence MCU 5300?

A.
Custom layouts must be applied for all conference participants.

B.
Custom layouts must be applied on a per-participant basis.

C.
Custom layouts can be applied for participants who join the conference.

D.
Custom layouts cannot be applied once the conference begins.

Explanation:
On a Cisco TelePresence multipoint control unit (MCU), custom layouts can be applied for participants who join
the conference. To select a custom layout for participants on a Cisco TelePresence MCU, navigate to
Conferences and select a conference name. Click the Custom layout tab, and select the layout that you want to
apply. To apply the custom layout instead of the default layout for new participants who join the conference,
select Make new participants see this view. Custom layouts can be applied for all conference participants or on
a per-participant basis.
Custom layouts can be applied at any time. To apply the currently selected custom layout to all participants
currently in the conference, select Switch all participants to this view.

Cisco: Cisco TelePresence MCU 5300 Series, Administration Guide: Customizing layout views (PDF)