When many faces of the group are reversed face, if you do it manually, you have to reverse each side, so it takes a long time to do this, so use an automatic tool
More infor: https://3dshouse.com/sketchup/auto-re...
00:00 When many faces of the group are reversed face
00:06 If you do it manually, you have to reverse each side, so it takes a long time to do this, so use an automatic tool
00:39 Select the group containing the face to be reversed - click auto reverse tool
00:45 All faces are quickly reversed