Preventing students from viewing each others profile in Moodle

Sometimes you need your students to not interact with each other in a course or you may have students from different organisations accessing a course and you want to restrict them from seeing each others information.
Let's see what we can do to restrict students from seeing each others profile and also from communicating with each other using the messaging tools.
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►► Useful links
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Favourite Moodle themes
Edwiser REMUI - ricoshae.com.a...
Adaptable - moodle.org/plu...
Moove - moodle.org/plu...
Plugins
Edwiser - Rapid Grader- ricoshae.com.a...
Design software
Affinity Designer 2 - affinity.serif...
Affinity Photo 2 - affinity.serif...
Screen capture software
Screen flow by Telestream - ricoshae.com.a...
Most used online services
Canva - Design application - ricoshae.com.a...
Free pix - Photos and vector images - ricoshae.com.a...
Tech that I use
Laptop - MacBook pro - ricoshae.com.a...
Monitor - Dell U2720Q UltraSharp USB-C 27 Inch 4K UHD (3840x2160) Monitor - ricoshae.com.a...
Microphone - Rode NT USB - ricoshae.com.a...
Microphone - Shure MV7X XLR - ricoshae.com.a...
Audio interface - Claret 8 Pre - ricoshae.com.a...
Camera - Sony a33600 - ricoshae.com.a...
Programming tools
Sublime Text - ricoshae.com.a...
Github - ricoshae.com.a...