diff --git a/common/eq_packet_structs.h b/common/eq_packet_structs.h
index 7b44bd45c..3730e1d14 100644
--- a/common/eq_packet_structs.h
+++ b/common/eq_packet_structs.h
@@ -2243,6 +2243,7 @@ struct GroupFollow_Struct { // SoF Follow Struct
 /*0132*/
 };
 
+// this is generic struct
 struct GroupLeaderChange_Struct
 {
 /*000*/		char	Unknown000[64];
diff --git a/common/patches/rof2.cpp b/common/patches/rof2.cpp
index 8f8d41281..cf84f040b 100644
--- a/common/patches/rof2.cpp
+++ b/common/patches/rof2.cpp
@@ -1182,17 +1182,17 @@ namespace RoF2
 			// Leader
 			//
 
-			VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);
-			VARSTRUCT_ENCODE_STRING(Buffer, gu2->yourname);
-			VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);
-			VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);
+			VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);		// index
+			VARSTRUCT_ENCODE_STRING(Buffer, gu2->yourname);	// name
+			VARSTRUCT_ENCODE_TYPE(uint16, Buffer, 0);		// owner name of merc
 			//VARSTRUCT_ENCODE_STRING(Buffer, "");
-			VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);	// This is a string
-			VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0x46);	// Observed 0x41 and 0x46 here
-			VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);
-			VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);
-			VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);
-			VARSTRUCT_ENCODE_TYPE(uint16, Buffer, 0);
+			VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);		// This is a string
+			VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0x46);	// level
+			VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);		// group tank flag
+			VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);		// group assist flag
+			VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);		// group puller flag
+			VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);		// offline
+			VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);		// timestamp
 
 			int MemberNumber = 1;
 
@@ -1201,17 +1201,17 @@ namespace RoF2
 				if (gu2->membername[i][0] == '\0')
 					continue;
 
-				VARSTRUCT_ENCODE_TYPE(uint32, Buffer, MemberNumber++);
-				VARSTRUCT_ENCODE_STRING(Buffer, gu2->membername[i]);
-				VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);
-				VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);
+				VARSTRUCT_ENCODE_TYPE(uint32, Buffer, MemberNumber++);	// index
+				VARSTRUCT_ENCODE_STRING(Buffer, gu2->membername[i]);	// name
+				VARSTRUCT_ENCODE_TYPE(uint16, Buffer, 0);				// merc flag
 				//VARSTRUCT_ENCODE_STRING(Buffer, "");
-				VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);	// This is a string
-				VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0x41);	// Observed 0x41 and 0x46 here
-				VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);
-				VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);	// Low byte is Main Assist Flag
-				VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);
-				VARSTRUCT_ENCODE_TYPE(uint16, Buffer, 0);
+				VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);				// owner name fo merc
+				VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0x41);			// level
+				VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);				// group tank flag
+				VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);				// group assist flag
+				VARSTRUCT_ENCODE_TYPE(uint8, Buffer, 0);				// group puller flag
+				VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);				// offline
+				VARSTRUCT_ENCODE_TYPE(uint32, Buffer, 0);				// timestamp
 			}
 
 			//Log.Hex(Logs::Netcode, outapp->pBuffer, outapp->size);
diff --git a/common/patches/rof2_structs.h b/common/patches/rof2_structs.h
index 1ed1b9916..13befdad9 100644
--- a/common/patches/rof2_structs.h
+++ b/common/patches/rof2_structs.h
@@ -2566,9 +2566,12 @@ struct GroupJoin_Struct_Live {	// New for Live
 };
 
 struct GroupJoin_Struct {
-/*000*/	char	unknown000[64];
+/*000*/	char	owner_name[64]; // merc
 /*064*/	char	membername[64];
-/*128*/	uint8	unknown128[20];	// Leadership AA ?
+/*128*/	uint8	merc;
+/*129*/	uint8	padding129[3];
+/*132*/	uint32	level;
+/*136*/	uint8	unknown136[12];	// group ID most likely in here judging from like captures (unused by client)
 /*148*/
 };