they were already present if the mean of that family are his mother & brothers,
dear garudaman, what is it with you and this story? Just read what it says.
Let me help you:
The story has three "scenes":
Scene one
20 Then Jesus entered a house, and again a crowd gathered, so that he and his disciples were not even able to eat. 21 When his family[b] heard about this, they went to take charge of him, for they said, “He is out of his mind.”
So Jesus went to this house and there was a commotion. Some people want to take control of him. Who ? "οἱ παρ’ αὐτοῦ". Literally "those with him". Family? friends? Followers? The Greek word for an actual family is "οικογένεια", but Mark uses a loose expression here. It COULD be some family members, it could also be other who are close to him. At this stage we do not know any more about that, but things get clearer later on.
Scene two
22 And the teachers of the law who came down from Jerusalem said, “He is possessed by Beelzebul! By the prince of demons he is driving out demons.”
23 So Jesus called them over to him and began to speak to them in parables: “How can Satan drive out Satan? 24 If a kingdom is divided against itself, that kingdom cannot stand. 25 If a house is divided against itself, that house cannot stand. 26 And if Satan opposes himself and is divided, he cannot stand; his end has come. 27 In fact, no one can enter a strong man’s house without first tying him up. Then he can plunder the strong man’s house. 28 Truly I tell you, people can be forgiven all their sins and every slander they utter, 29 but whoever blasphemes against the Holy Spirit will never be forgiven; they are guilty of an eternal sin.”
30 He said this because they were saying, “He has an impure spirit.”
Now we are taken into the house and there a heated argument, which does not seem to interest you very much. However, you can see that there was some coming and going, as well as discussions, and we are told Jesus told them "parables"... teaching stories. Mark only provides a very short summary, and we can be quite sure this went on for some time. We are also told others arrive in the course of that.
Scene three:
31 Then Jesus’ mother and brothers arrived. Standing outside, they sent someone in to call him. 32 A crowd was sitting around him, and they told him, “Your mother and brothers are outside looking for you.”
33 “Who are my mother and my brothers?” he asked.
34 Then he looked at those seated in a circle around him and said, “Here are my mother and my brothers! 35 Whoever does God’s will is my brother and sister and mother.”
I highlighted the part you seem to dislike and persistently ignore. Notice the "then" (=terus)? Mark tells his story IN ORDER. So When the discussions (of most of them) described in scene two have been going on for a time, Mary arrives, with the brothers of Jesus. This means they were not there when those "with him" called Jesus mad and wanted to take charge.
Mary tried to extract Jesus from the house with a message, but Jesus decided it was more important to finish his teaching.
thats not true, the Quran never said that.
Yes it is. And I can show you, if you want.
Jesus disciples are the part of the ministry or the monastery of Jesus?
I said the passage is sometimes read at the ceremony of the vows, when someone becomes a monk or a nun, because the of the way it ends: a monk or a nun also leaves behind his/her family.