There are many ways to start GUIDE. You can start GUIDE from the:
Command line by typing guide
MATLAB® toolstrip. On the HOME tab, in the FILE section, selectNew > Graphical User Interface.
However you start GUIDE, it displays the GUIDE Quick Start dialog box shown in the following figure.
The GUIDE Quick Start dialog box contains two tabs:
Create New GUI — Asks you to start creating your new GUI by choosing a template for it. You can also specify the name by which the GUI is saved.
See Select a GUI Template for information about the templates.
Open Existing GUI — Enables you to open an existing GUI in GUIDE. You can choose a GUI from your current folder or browse other directories.