You must already have registered with Play-Cricket. If you have not done this, see The Play-Cricket Sign-up Process 

Log in to the Play-Cricket and visit the site that you wish to join.

From a PC/laptop Click on the 'head and shoulders' icon in the top right corner and select Join this site.

From a mobile device login to http://www.play-cricket.com or any Play-Cricket site. Click on the 3 lines on the header, select your name and select join this site

You will be prompted to add a reason , please enter your reason for joining the site, then click Apply.

The application to join will be submitted to the club administrators. When approved, you will be notified by email.