collaborationdiagram collabor collabor diagram collabor diagram us object interact perform behavior particular us us sequenc diagram collabor us design defin clarifi role object perform particular flow event us primari sourc inform us determin respons interfac sequencediagram sequenc sequenc diagram interact diagram model behavior us case describ wai group object interact complet task sequenc diagram displai time sequenc object particip interact consist vertic dimens time horizont dimens differ object associ object difer packag model object creat root sai pack inner packag contain object pack pack creat associ object sai class associ creat diagram locat pack pack instead creat root pack furthermor namespac box associ show root imposs drag drop behavior us diagram us actor differ packag attach imag problem unabl drag class packag defin want drag defin left window centric centric view doe allow abl class note alongsid class abl drag drop suggest mayb abl manual edit properti 