IDP settlements and IDP tents both share the same tagging scheme
###idp:camp_site=spontaneous_camp ###damage:event=nepal_earthquake_2015
###idp:status_yyyymmdd={new,increased,decreased, or empty}
####ex: ####idp:status_20150427=new ####idp:status_20150503=decreased
###idp:source_yyyymmdd={add appropriate source}
####ex: ####idp:source_20150427=CNES, Airbus DS ####idp:source_20150503=GeoEye1 DigitalGlobe
####You can see in the examples above you have two idp:source tags because you used two imagery source to evaluate the change in the IDP site. You also have two idp:status tags to record the status at two times.