fix: designation mapping from job applicant to job offer

- group create buttons
diff --git a/erpnext/hr/doctype/job_applicant/job_applicant.js b/erpnext/hr/doctype/job_applicant/job_applicant.js
index d7b1c6c..8e46192 100644
--- a/erpnext/hr/doctype/job_applicant/job_applicant.js
+++ b/erpnext/hr/doctype/job_applicant/job_applicant.js
@@ -21,9 +21,9 @@
 
 	create_custom_buttons: function(frm) {
 		if (!frm.doc.__islocal && frm.doc.status !== "Rejected" && frm.doc.status !== "Accepted") {
-			frm.add_custom_button(__("Create Interview"), function() {
+			frm.add_custom_button(__("Interview"), function() {
 				frm.events.create_dialog(frm);
-			});
+			}, __("Create"));
 		}
 
 		if (!frm.doc.__islocal) {
@@ -40,10 +40,10 @@
 					frappe.route_options = {
 						"job_applicant": frm.doc.name,
 						"applicant_name": frm.doc.applicant_name,
-						"designation": frm.doc.job_opening,
+						"designation": frm.doc.job_opening || frm.doc.designation,
 					};
 					frappe.new_doc("Job Offer");
-				});
+				}, __("Create"));
 			}
 		}
 	},