Pulling all of the strings
Charismatic Leaders use a wide range of methods to manage their image and, if they are not naturally charismatic, may practice assiduously at developing their skills. They may engender trust through visible self-sacrifice and taking personal risks in the name of their beliefs. They will show great confidence in their followers. They are very persuasive and make very effective use of body language as well as verbal language.
Deliberate charisma is played out in a theatrical sense, where the leader is 'playing to the house' to create a desired effect. They also make effective use of storytelling, including the use of symbolism and metaphor.
Many politicians use a charismatic style, as they need to gather a large number of followers. If you want to increase your charisma, studying videos of their speeches and the way they interact with others is a great source of learning. Religious leaders, too, may well use charisma, as do cult leaders.