Huawei Bar 500 Operation Manual page 32

Change the Layout (SVC Meeting - Gallery View)
1
Tap Gallery View.
3
Tap Focus View to view the site in full screen.
2
Tap a site.
About the Layout in an
SVC Meeting
Layout modes depend on the
number of sites in a meeting.
The gallery view is
unavailable if a site is sharing
content in a meeting.