diff --git a/AlgebraicDataflowArchitectureModel/models/CustomerOffice.model b/AlgebraicDataflowArchitectureModel/models/CustomerOffice.model
index 6c989ee..f54dd60 100644
--- a/AlgebraicDataflowArchitectureModel/models/CustomerOffice.model
+++ b/AlgebraicDataflowArchitectureModel/models/CustomerOffice.model
@@ -1,3 +1,7 @@
+channel CIO_AddCustomer {
+	out customers(db:Map, addCustomer(uid:Str, off:Str)) == insert(db, uid, addMember(nil, "off", off))
+}
+
 channel CIO_SetCustomerOff(uid:Str) {
 	out customers.{uid}.off(cid:Str, setOff(cid2)) == cid2
 }