Using the package tikz to create a diagram

Question

I have been trying for ages without and prevail to design this diagram. It is my first time trying to use this package. Could someone help me please with this? Thanks :)

This is what I have so far:

\begin{singlespace}

\begin{tikzpicture}[
level 1/.style={sibling distance=50mm},
edge from parent/.style={->,draw},
>=latex]

% root of the the initial tree, level 1
\node[root] {VC: Global Showcase Event}
% The first level, as children of the initial tree
child {node[level 2] (c1) {Project Managment}}
child {node[level 2] (c2) {Ambassadors}}
child {node[level 2] (c3) {Marketing}};

% The second level, relatively positioned nodes
\begin{scope}[every node/.style={level 3}]
\node [below of = c1, xshift=15pt] (c11) {Project Assigned};
\node [below of = c11] (c12) {Project Start};
\node [below of = c12] (c13) {Plan Created};

\node [below of = c2, xshift=15pt] (c21) {Using a Matrix};
\node [below of = c21] (c22) {Create Ambassadors Requriements};
\node [below of = c22] (c23) {Contact Possible Ambassadors};
\node [below of = c23] (c24) {Comm Devlopments};

\node [below of = c3, xshift=15pt] (c31) {Default arrows};
\node [below of = c31] (c32) {Set Marketing Objectives};
\node [below of = c32] (c33) {Design Survey};
\node [below of = c33] (c34) {Publish Questionaire};
\node [below of = c34] (c35) {Evlauate Results};
\node [below of = c35] (c36) {Design Communication Plan};
\end{scope}

% lines from each level 1 node to every one of its "children"
\foreach \value in {1,2,3}
\draw[->] (c1.195) |- (c1\value.west);

\foreach \value in {1,...,4}
\draw[->] (c2.195) |- (c2\value.west);

\foreach \value in {1,...,5}
\draw[->] (c3.195) |- (c3\value.west);
\end{tikzpicture}


\end{singlespace}

Answer 1

It is a tree, so naturally, I recommend Forest ....

Loading the edges library provides access to the folder style which typesets a directory-style tree. Although that's not what the image you posted shows, that is what I took you to be trying to do with the code you posted. (Though I'm not confident of this at all.)

The nice thing about Forest is that all the locating of nodes is done automatically and, in this case, we colour the tree automatically according to level as well.

Omit the shadows for less bling.

\documentclass[tikz,border=10pt]{standalone}
\usepackage[edges]{forest}
\usetikzlibrary{arrows.meta,shadows.blur}
\begin{document}
\colorlet{myyellow}{yellow!50}
\begin{forest}
  colour me/.style={top color=#1!75, bottom color=#1, draw=#1, thick, blur shadow, rounded corners},
  for tree={
    edge=-Latex,
    font=\sffamily,
  },
  where level=1{
    for tree={
      folder,
      grow'=0,
    },
    edge path'={(!u.parent anchor) -- ++(0,-15pt) -| (.child anchor)},
  }{},
  before typesetting nodes={
    for tree={
      content/.wrap value={\strut #1},
    },
    if={isodd(n_children("!r"))}{
      for nodewalk/.wrap pgfmath arg={{fake=r,n=#1}{calign with current edge}}{int((n_children("!r")+1)/2)},
    }{},
    tempcounta/.max={level}{tree},
    for tree={
      colour me/.wrap pgfmath arg={cyan!#1!myyellow}{100*((tempcounta)-level())/(tempcounta)}
    }
  }
  [VC: Global Showcase Event
    [Project Management
      [Project Assigned]
      [Project Start]
      [Plan Created]
    ]
    [Ambassadors
      [Using a Matrix]
      [Create Ambassadors Requirements]
      [Contact Possible Ambassadors]
      [Comm Developments]
    ]
    [Marketing
      [Default arrows]
      [Set Marketing Objectives]
      [Design Survey]
      [Publish Questionnaire]
      [Evaluate Results]
      [Design Communication Plan, no edge, colour me=yellow]
    ]
  ]
\end{forest}
\end{document}