Kammala jumla mai zuwa: A 1950 Geißel ya zama shugaban reshen Hamburg na, ta hanyar gabatar da sashen Crisis Response ("Katastrophenhilfe"), ba da izini ba a matsayin amsa ga
ambaliyar ruwa a cikin Netherlands a 1953, kuma an kafa shi a 1954. A shekarar 1955 ya koma babban ofishin kungiyar na kasa a Stuttgart, inda ya dauki nauyin sashin Crisis Response a kasa. Bayan haɗuwa da cocin da ke tallafawa bisharar Inner, a cikin 1957 an nada shi darektan ƙungiyar haɗin gwiwa, har yanzu yana zaune a Stuttgart. Hakkinsa ya hada da kudi, amsa rikicin da gudanarwa. A cikin 1972 an nada shi mataimakin shugaban abin da yanzu ya zama Diakonischen Werkes der EKD e.V. Ya yi ritaya a 1982, amma ya ci gaba da ba da gudummawa a matsayin mai ba da shawara.