To become a good dictyonomist, you simply have to behave like a host, even if you are not a host. Just feel responsible for the situation around you. Your bar table, chair, corner (or wherever you are) is your party area and this is where you define the atmosphere. Make sure that the same rules apply in your sphere of influence as in your home: openness, attentiveness, a sense of responsibility for each other.
If you feel like a host everywhere, you will also radiate this. People are attracted to people who take responsibility for the situation, they trust them more.
The advantage for you: There is always a pleasant atmosphere where you are, your small party is always the best, no matter what big event it is.
Get used to feeling responsibility for the people around you.