This particular lamasching/lamaschutra (terms are not completely clear yet) school is build less on fixed conventions like "This is allowed and this not" but more on clear communication signals to be able to check that the space of contact in consent is secured.
While the concepts of separated sensual and sexual contact are known to the author the Joachim school of lamasching does not have fixed limitations in one area. Everything is allowed as long as it does not go against the the will of a participating person in the sense that this person is dragged into something he/she does not want.
Lamasching is a mostly physical experience. Thats why the communication signals and guides provided here are primarily of physical nature.
Freedom
First things first: While we encourage to communicate a situation in a way that we can sustain physical contact we want to point out that we are free to leave the lamasching/lamaschutra pit whenever we want and we support people that want to leave so they can do that easily.
The roles
We differentiate into different roles at certain points while keeping in mind that normally all participants have all roles that are changing when everything is flowing.. This means that perhaps only a certain bodypart of a person is for example in the role of the giver. This could be a hand, a leg or whatever bodypart that fits the role in this moment.
Giver: The giver (part) is actively reaching out. As giver be aware that you move in a tempo where people can react and communicate gently if you step on their borders. Be receptive to feel when people give you signals that you reached a border and respect it and follow the signal.
Receiver: The receiver (part) has the biggest responsibility in the lamasching/lamaschutra pit. The most important part of this role is to be in constant awareness where the own personal borders are in the moment and not to ignore when borders are stepped over but instead actively communicate these borders clearly and adequately.
Forms of physical communication:
Do not give in or evade: The first premise is that we do not let ourselves be changed in our comfortable established position, by someone approaching us. That means we do not let us be touched when we realize that this is not within our comfort zone anymore. We also do not react by turning away when we had a clearly established comfortable position.
Redirect: When a person touches an area where you dont want to be touched at the moment redirect them. Take their bodypart and give it a clear and gentle impulse to another direction. See also guide.
tip/clap: When the gentle redirection did not work and the person is going over your borders, tip on their bodypart (e.g. fingers, hands, feet, head) or clap on it (e.g. bigger body parts like arms, legs , hips , shoulders, torso...). If tiping doesnt help change to clap.
Pinch: If a person is not responding to a clap (which can happen when you are in half sleep while moving or concentrating a lot on receiveing) pinch them. This may be painful but is necessary when the consciousness of a person has drifted away so far from their body(part) that they do not any more realize the above forms of communication.
Speak out: If a person is not reacting even to your harder pinches there is something wrong. It may be that they lost feeling in the bodypart (somebody lies on their arm and pressured blood vessels lead to numbness), perhaps they forgot about the framework or even mistook you for someone they had another agreement with. In any way speak out what you want/what you dislike e.g.: "Take your tounge out of my ear", "I dont want to have a foot on belly" , "take your ellbow away from my penis" or whatever. Make a clear wish.
Change: If all your communication attempts fail and you still cannot maintain a comfortable position and contact change your position.
Remember that if you do not trust in the people around you in this moment you can leave. To stay means that you decide to confront your distrust.
Guide: Because the giver respects the borders given by the receiver it could come the situation where i declared my butt as a no go zone and then at some point i change my mind and feel like having a warm leg, that i redirected before away , would be now actually quite nice on my cold butt. To expect that the person will approach my but again with her leg would be unrealistic in this formation because i would expect the person to go against the rule of respecting borders where they were set. To solve this issue i can take initiative and grab the leg and place it gently on my butt.
As a guide i could also guide a bodypart of somebody else in a direction they did not explore beforehand. When doing that i have to be aware that i am confronting this person very strong in a double role as giver and receiver, me being first giver and then receiver and the other person being first receiver and then giver.
Other senses
The core of lamasching is physical contact. All other senses are involved. While tasting follows a similar principle than touching, hearing seeing and smelling senses have a much wider range in space. If you feel any of these senses disturbed you can communicate that and formulate a wish from that. Nobody is obliged to follow that wish.Remember you are free to leave if you feel strongly disturbed.
Examples: "I see you start having sex over there. Would you mind doing that somewhere else?", "Something here smells like really strong chease. Could whoever is the source of that take care that this smell vanishes?", " Who is snorting here? Can someone wake this person up?"
Be honest and direct in your communication while not blaming. Again, if you cant stand the situation you are free to leave.
This lamasching school has no fixed boundaries. slight touching, petting , sexual contact, everything is allowed as long as it is build on comfortable consent and the free decision of confronting and exploring places out of the regular comfort zone.
Dissolving roles , master the lamasching.
With the right practice the awareness and coordination of individuals will grow and the mixture of roles will be happen more and more into a undefinable salad 
Emergency cases, shock or unconsciousness: While not being very likely i want to make very clear that in a case of emergency, like someone falling into shock or being unconscious, first aid protocol kicks in and everyone in the room is (by german law and rules of lamasching) bound to help to their best ability by supporting the person who took lead in first aid measurements or initiate the measurements themselves.
