Project Charter as INPUT - in what processes is it?

Use the following illustration to visualize in what processes you need to use Project Charter.
Visualisation is a great trick to remember important facts. The processes marked in blue are where Project Charter is required as Input.

EEF & OPA - into what processes do they go?

OK. Enterprise Environmental Factors and Organizational Process Assets  are frequent inputs. So frequent that sometimes they become a little bit intimidating. So let's make clear - visually - whrere they are and where you can simply forget about them.
These are frequent inputs. So frequent that sometimes it becomes a little bit intimidating especially when you just read it. So let's make it clear - visually - whrere they are and where you can simply forget about them.

Expert Judgement - in what processes do you need it?

Expert Judgment is an important Input to many processes. In short, sometimes you need experts, sometimes you do. And even though in a lot of situations, engaging an expert will be common sense, PMI clearly states in which processes they are required. Let's start by introducing a simple trick to better memorize this. It is easier to memorize -> where Experts ARE NOT.

Meetings - in what processes do you formally need them?

Meetings, meetings, meeting. They are everywhere. Or not? They are not part of every process. They are mainly in planning. When you look at the graphic, it will all suddenly become very clear.