Soon I will be trying these out:

https://www.ahaapps.com/setting-up-the-follow-functionality-in-dynamics-365/

https://cloudblogs.microsoft.com/dynamics365/no-audience/2011/10/27/following-and-unfollowing-records-in-crm/

https://www.crmug.com/communities/community-home/digestviewer/viewthread?MessageKey=7c698549-e74b-4afc-972d-40ab55a02c0e&CommunityKey=dc83c23b-ede0-4070-ae7a-dd90859148a6&tab=digestviewer

https://community.dynamics.com/crm/f/microsoft-dynamics-crm-forum/359651/improve-and-personalize-the-follow-feature