I recommend using this sheet to track your calls and emails when setting up events.
I keep all the contact I am working with for events paper clipped together.
I keep a separate sheet in the back for upcoming and past events.
I try to track everything so I have an idea how my talks are going. Example if one talk there are 8 people and 3 come in then the next talk there are 16 people and 14 come in and the next talk there are 15 people and 2 come in I need to really figure out the variables and how to work on my communication so I can make a great impact.
Quantifying is a great skill to learn.