fix: allow addition and removal of employee in payroll Entry
diff --git a/erpnext/payroll/doctype/payroll_employee_detail/payroll_employee_detail.json b/erpnext/payroll/doctype/payroll_employee_detail/payroll_employee_detail.json
index 8a55224..09c7eb9 100644
--- a/erpnext/payroll/doctype/payroll_employee_detail/payroll_employee_detail.json
+++ b/erpnext/payroll/doctype/payroll_employee_detail/payroll_employee_detail.json
@@ -17,8 +17,7 @@
    "fieldtype": "Link",
    "in_list_view": 1,
    "label": "Employee",
-   "options": "Employee",
-   "read_only": 1
+   "options": "Employee"
   },
   {
    "fetch_from": "employee.employee_name",
@@ -52,7 +51,7 @@
  ],
  "istable": 1,
  "links": [],
- "modified": "2020-09-30 12:40:07.999878",
+ "modified": "2020-12-17 15:43:29.542977",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Payroll Employee Detail",
diff --git a/erpnext/payroll/doctype/payroll_entry/payroll_entry.js b/erpnext/payroll/doctype/payroll_entry/payroll_entry.js
index cb48abb..28236c0 100644
--- a/erpnext/payroll/doctype/payroll_entry/payroll_entry.js
+++ b/erpnext/payroll/doctype/payroll_entry/payroll_entry.js
@@ -31,7 +31,7 @@
 
 	refresh: function(frm) {
 		if (frm.doc.docstatus == 0) {
-			if(!frm.is_new()) {
+			if (!frm.is_new()) {
 				frm.page.clear_primary_action();
 				frm.add_custom_button(__("Get Employees"),
 					function() {
@@ -61,33 +61,33 @@
 			doc: frm.doc,
 			method: 'fill_employee_details',
 		}).then(r => {
-			if (r.docs && r.docs[0].employees){
+			if (r.docs && r.docs[0].employees) {
 				frm.employees = r.docs[0].employees;
 				frm.dirty();
 				frm.save();
 				frm.refresh();
-				if(r.docs[0].validate_attendance){
+				if (r.docs[0].validate_attendance) {
 					render_employee_attendance(frm, r.message);
 				}
 			}
-		})
+		});
 	},
 
 	create_salary_slips: function(frm) {
 		frm.call({
 			doc: frm.doc,
 			method: "create_salary_slips",
-			callback: function(r) {
+			callback: function() {
 				frm.refresh();
 				frm.toolbar.refresh();
 			}
-		})
+		});
 	},
 
 	add_context_buttons: function(frm) {
-		if(frm.doc.salary_slips_submitted || (frm.doc.__onload && frm.doc.__onload.submitted_ss)) {
+		if (frm.doc.salary_slips_submitted || (frm.doc.__onload && frm.doc.__onload.submitted_ss)) {
 			frm.events.add_bank_entry_button(frm);
-		} else if(frm.doc.salary_slips_created) {
+		} else if (frm.doc.salary_slips_created) {
 			frm.add_custom_button(__("Submit Salary Slip"), function() {
 				submit_salary_slip(frm);
 			}).addClass("btn-primary");
@@ -192,9 +192,9 @@
 	},
 
 	start_date: function (frm) {
-		if(!in_progress && frm.doc.start_date){
+		if (!in_progress && frm.doc.start_date) {
 			frm.trigger("set_end_date");
-		}else{
+		} else {
 			// reset flag
 			in_progress = false;
 		}
@@ -228,7 +228,7 @@
 		}
 	},
 
-	set_end_date: function(frm){
+	set_end_date: function(frm) {
 		frappe.call({
 			method: 'erpnext.payroll.doctype.payroll_entry.payroll_entry.get_end_date',
 			args: {
@@ -243,9 +243,9 @@
 		});
 	},
 
-	validate_attendance: function(frm){
-		if(frm.doc.validate_attendance && frm.doc.employees){
-			frappe.call({
+	validate_attendance: function(frm) {
+		if (frm.doc.validate_attendance && frm.doc.employees) {
+			frappe.call ({
 				method: 'validate_employee_attendance',
 				args: {},
 				callback: function(r) {
@@ -255,7 +255,7 @@
 				freeze: true,
 				freeze_message: __('Validating Employee Attendance...')
 			});
-		}else{
+		} else {
 			frm.fields_dict.attendance_detail_html.html("");
 		}
 	},
@@ -274,14 +274,16 @@
 			frappe.call({
 				method: 'submit_salary_slips',
 				args: {},
-				callback: function() {frm.events.refresh(frm);},
+				callback: function() {
+					frm.events.refresh(frm);
+				},
 				doc: frm.doc,
 				freeze: true,
 				freeze_message: __('Submitting Salary Slips and creating Journal Entry...')
 			});
 		},
 		function() {
-			if(frappe.dom.freeze_count) {
+			if (frappe.dom.freeze_count) {
 				frappe.dom.unfreeze();
 				frm.events.refresh(frm);
 			}
@@ -316,4 +318,4 @@
 			data: data
 		})
 	);
-}
+};
diff --git a/erpnext/payroll/doctype/payroll_entry/payroll_entry.json b/erpnext/payroll/doctype/payroll_entry/payroll_entry.json
index 7a48dd1..0444134 100644
--- a/erpnext/payroll/doctype/payroll_entry/payroll_entry.json
+++ b/erpnext/payroll/doctype/payroll_entry/payroll_entry.json
@@ -129,8 +129,7 @@
    "fieldname": "employees",
    "fieldtype": "Table",
    "label": "Employee Details",
-   "options": "Payroll Employee Detail",
-   "read_only": 1
+   "options": "Payroll Employee Detail"
   },
   {
    "fieldname": "section_break_13",
@@ -290,7 +289,7 @@
  "icon": "fa fa-cog",
  "is_submittable": 1,
  "links": [],
- "modified": "2020-10-23 13:00:33.753228",
+ "modified": "2020-12-17 15:13:17.766210",
  "modified_by": "Administrator",
  "module": "Payroll",
  "name": "Payroll Entry",