diff --git a/Controllers/CandidateController.cs b/Controllers/CandidateController.cs
index 9cc2361..1b0ee72 100644
--- a/Controllers/CandidateController.cs
+++ b/Controllers/CandidateController.cs
@@ -717,6 +717,37 @@ namespace BMA.EHR.Recurit.Exam.Service.Controllers
             }
         }
 
+        /// <summary>
+        /// เจ้าหน้าที่ตรวจคุณสมบัติผู้สมัครหลายคน
+        /// </summary>
+        /// <param name="candidateId">รหัสใบสมัคร</param>
+        /// <returns></returns>
+        /// <response code="200">เมื่อเจ้าหน้าที่ตรวจคุณสมบัติผู้สมัครสำเร็จ</response>
+        /// <response code="401">ไม่ได้ Login เข้าระบบ</response>
+        /// <response code="500">เมื่อเกิดข้อผิดพลาดในการทำงาน</response>
+        [HttpPost("check-registers")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+        [ProducesResponseType(StatusCodes.Status500InternalServerError)]
+        public async Task<ActionResult<ResponseObject>> CheckRegistersCandidateService(RequestApproves item)
+        {
+            try
+            {
+                var _item = new RequestApprove();
+
+                if (item.CandidateId != null)
+                {
+                    await _candidateService.AdminCheckCandidatesService(item.CandidateId);
+                }
+
+                return Success();
+            }
+            catch (Exception ex)
+            {
+                return Error(ex);
+            }
+        }
+
         /// <summary>
         /// เจ้าหน้าที่ตรวจคุณสมบัติผู้สมัครไม่ผ่านและให้สมัครใหม่
         /// </summary>
diff --git a/Request/RequestApproves.cs b/Request/RequestApproves.cs
new file mode 100644
index 0000000..aff1968
--- /dev/null
+++ b/Request/RequestApproves.cs
@@ -0,0 +1,9 @@
+using System.Net;
+
+namespace BMA.EHR.Recurit.Exam.Service.Request
+{
+    public class RequestApproves
+    {
+        public string[]? CandidateId { get; set; }
+    }
+}
diff --git a/Services/CandidateService.cs b/Services/CandidateService.cs
index 679a2aa..4517a07 100644
--- a/Services/CandidateService.cs
+++ b/Services/CandidateService.cs
@@ -630,6 +630,12 @@ namespace BMA.EHR.Recurit.Exam.Service.Services
             if (exam == null)
                 throw new Exception(GlobalMessages.ExamNotFound);
 
+            if (exam.RegisterStartDate != null && exam.RegisterStartDate.Value.Date > DateTime.Now.Date)
+                throw new Exception("ยังไม่ถึงช่วงเวลาสมัครสอบ");
+
+            if (exam.RegisterEndDate != null && exam.RegisterEndDate.Value.Date < DateTime.Now.Date)
+                throw new Exception("หมดเวลาช่วงสมัครสอบ");
+
             var _candidate = await _context.Candidates.AsQueryable()
                             .FirstOrDefaultAsync(x => x.PeriodExam == exam && x.UserId == UserId);
 
@@ -1729,10 +1735,10 @@ namespace BMA.EHR.Recurit.Exam.Service.Services
             if (exam == null)
                 throw new Exception(GlobalMessages.ExamNotFound);
 
-            if (exam.RegisterStartDate != null && exam.RegisterStartDate.Value.Date < DateTime.Now.Date)
+            if (exam.RegisterStartDate != null && exam.RegisterStartDate.Value.Date > DateTime.Now.Date)
                 throw new Exception("ยังไม่ถึงช่วงเวลาสมัครสอบ");
 
-            if (exam.RegisterEndDate != null && exam.RegisterEndDate.Value.Date > DateTime.Now.Date)
+            if (exam.RegisterEndDate != null && exam.RegisterEndDate.Value.Date < DateTime.Now.Date)
                 throw new Exception("หมดเวลาช่วงสมัครสอบ");
 
             var candidate = await _context.Candidates.AsQueryable()
@@ -1850,6 +1856,49 @@ namespace BMA.EHR.Recurit.Exam.Service.Services
 
             await _context.SaveChangesAsync();
         }
+        public async Task AdminCheckCandidatesService(string[] candidateId)
+        {
+            var _num = 0;
+            foreach (var _candidateId in candidateId)
+            {
+                var candidate = await _context.Candidates.AsQueryable()
+                                .Include(x => x.PeriodExam)
+                                .FirstOrDefaultAsync(x => x.Id == Guid.Parse(_candidateId));
+                if (candidate == null)
+                    throw new Exception(GlobalMessages.CandidateNotFound);
+
+                if (candidate.PeriodExam == null)
+                    throw new Exception(GlobalMessages.ExamNotFound);
+
+                var periodExam = await _context.Candidates.AsQueryable()
+                                .Where(x => x.PeriodExam == candidate.PeriodExam && x.ExamIdenNumber != null)
+                                .OrderByDescending(d => d.CreatedAt)
+                                .ToListAsync();
+
+                if (periodExam == null)
+                    throw new Exception(GlobalMessages.ExamNotFound);
+
+                candidate.Status = "payment";
+                if (candidate.PeriodExam.Fee == 0)
+                {
+                    var subject = "แจ้งผลการสมัครสอบคัดเลือก " + candidate.PeriodExam.Name;
+                    var body = candidate.FirstName + " " + candidate.LastName + " สถานะการสมัครสอบ: รอเจ้าหน้าที่จัดที่นั่งสอบ";
+                    if (candidate.Email != null && candidate.Email != "") _mailService.SendMailToUser(subject, body, candidate.Email);
+                    candidate.Status = "checkSeat";
+                    var num = periodExam.Count() + 1 + _num;
+                    candidate.ExamIdenNumber = "CDC-" + num;
+                }
+                else if (candidate.PeriodExam.Fee != 0)
+                {
+                    var subject = "แจ้งผลการสมัครสอบคัดเลือก " + candidate.PeriodExam.Name;
+                    var body = candidate.FirstName + " " + candidate.LastName + " สถานะการสมัครสอบ: รอชำระค่าสมัครสอบ";
+                    if (candidate.Email != null && candidate.Email != "") _mailService.SendMailToUser(subject, body, candidate.Email);
+                }
+                ++_num;
+            }
+
+            await _context.SaveChangesAsync();
+        }
 
         public async Task AdminPassCandidateService(string candidateId, string status)
         {