When browsing through programs, you may see some programs with application written alongside the title, this essentially is just what they are, you would need to apply to hunt for bugs on them. Some may have specific criteria to meet such as being ID checked or regional restrictions imposed by the program owners.
Open up the program you are interested in applying for and you will need to first read through the terms and conditions, you will then need to accept to agree and proceed.
Figure 1.1 : Screenshot showing terms and conditions acceptance button
After agreeing there will be only limited information available in the program details such as a description and bounties.
Next will be for you to provide a motivation explaining why you would like to join this program, the stronger the motivation the better your chances will be. Consider mentioning your strengths and what you might be able to bring to the program, you have up to 500 characters to use, so make it count and give the customer reason to accept your application.
Figure 1.2 : Screenshot showing send motivation button
Figure 1.3 : Screenshot showing motivation text box
Figure 1.4 : Screenshot showing application sent
If you haven't being accepted don't be disheartened, look for a new program and try your luck there.
If you are accepted you will receive an email notification informing you of this, and when you check back on the program you will notice all the details are now available, please be sure to read through and pay special attention to what is in scope and not in scope.
Figure 1.5 : Screenshot showing the accepted application
Congratulations on being accepted, happy hunting.