Use the Cadimage Covering set to panels to create tiles in your bathrooms. Instead of placing the covering on the outside place it on the inside. Select just the walls you need to add them to, note you may need to split some walls.
If you have deleted one or more of the Interior Elevations in a group and want to get them back, you can do so easily by selecting the Group Marker > right-clicking, and hitting Restore all Interior Elevations in Group.
If you want to create a group of Interior Elevation (IE) viewpoints, with a single marker for the entire group, bring up the Interior Elevations settings dialog box>Marker>choose ‘One common Marker for the IE Group’ . .