diff --git a/modules/structs/grouptasks.go b/modules/structs/grouptasks.go
index c798337..d765ced 100644
--- a/modules/structs/grouptasks.go
+++ b/modules/structs/grouptasks.go
@@ -40,6 +40,7 @@ type GroupTaskSteps struct {
 	Inputs        string `gorm:"type:json"`
 	StartedAt     time.Time
 	EndedAt       time.Time
+	Locked        bool `gorm:"-"` // used by the web client to ensure that only one user can edit the input value
 }
 
 // read from file structure
diff --git a/modules/utils/globals.go b/modules/utils/globals.go
index fa54b25..11d2ab0 100644
--- a/modules/utils/globals.go
+++ b/modules/utils/globals.go
@@ -36,6 +36,7 @@ const (
 	SentCmdUpdateScannerUsedBy      = 13
 	SentCmdScanResult               = 14
 	SentCmdUpdateScannerLastUsed    = 15
+	SentCmdTaskLocked               = 16
 )
 
 // commands received from web clients
@@ -44,6 +45,7 @@ const (
 	ReceivedCmdTaskFailedTryAgainRunTaskStep = 2
 	ReceivedCmdTaskContinueTaskStep          = 3
 	ReceivedCmdReloadGroupTasks              = 4
+	ReceivedCmdTaskLocking                   = 5
 )
 
 var (
diff --git a/socketclients/socketclients.go b/socketclients/socketclients.go
index e76a4db..b7458a9 100644
--- a/socketclients/socketclients.go
+++ b/socketclients/socketclients.go
@@ -13,6 +13,14 @@ func BroadcastMessage(sendSocketMessage structs.SendSocketMessage) {
 	}
 }
 
+func BroadcastMessageExceptUserSessionId(ignoreUserSessionId string, sendSocketMessage structs.SendSocketMessage) {
+	for _, client := range cache.GetSocketClients() {
+		if client.SessionId != ignoreUserSessionId {
+			client.SendMessage(sendSocketMessage)
+		}
+	}
+}
+
 func UpdateConnectedUsers(userId string) {
 	BroadcastMessage(structs.SendSocketMessage{
 		Cmd: utils.SentCmdUpdateConnectedUsers,
diff --git a/socketserver/hub.go b/socketserver/hub.go
index e19afc7..8f0b1cc 100644
--- a/socketserver/hub.go
+++ b/socketserver/hub.go
@@ -154,6 +154,14 @@ func RunHub() {
 				grouptasks.LoadGroups(category)
 
 				break
+			case utils.ReceivedCmdTaskLocking:
+				log.Info().Msgf("task locking %s", receivedMessage.Body)
+
+				socketclients.BroadcastMessageExceptUserSessionId(data.Conn.Locals("sessionId").(string), structs.SendSocketMessage{
+					Cmd:  utils.SentCmdTaskLocked,
+					Body: receivedMessage.Body,
+				})
+				break
 
 			default:
 				log.Error().Msgf("Received unknown message: %s", receivedMessage)