To open the Simulink Start Page, in the MATLAB Toolstrip, click Simulink.
On the Start Page, click the title of a template to expand the description.
Click the down arrow next to Create Model and select Set As Default.
On the Home tab, in the Resources section, click Help > Licensing > Activate.
MATLAB starts the activation application, which walks you through the activation process.
Answer the questions on each dialog box, select the license you want to activate, and click Activate.
To link a license to your MathWorks Account, you need a valid activation key (obtained from your license administrator) or license number (accessible from the MATLAB® command line by typing "license").
If you do not have a MathWorks Account, create an account and link a license at that time.