You can flip your front and rear camera while in a RingCentral Video meeting by tapping the camera icon on the top right of your self-view tile, which may display in different video layouts:

In Active speaker view, your self-view tile will appear initially on the bottom left which you can drag around the screen.

 

In Gallery view, your self view tile displays as the first tile on the gallery view list.

 

In Filmstrip view, your self-view tile will appear at the bottom left corner.