This plugin adds a widget to Buddypress that displays the friends for the current user that is logged in.

Noted That:

To install correctly this buddypress-friends.zip.
Fisrt Download the buddypress-friends.zip to your computer
Extract/Open buddypress-friends.zip to Your Computer.
Then, Find readme.txt file inside buddypress-friends.zip and Open readme.txt.
Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
Then, Follow the the Tips Below.

Start the Tips:

1. First Download "buddypress-friends.zip" Plugin to your Local Computer. (Click Download)

2. Then, Login to your "yourdomain.com/wp-admin" Dashboard.

3. Then, Click on "Plugins" + "Add New" from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse "buddypress-friends.zip" Downloaded plugin from your computer, Where you downloaded buddypress-friends.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "Buddypress Friends" folder is added on left sidemenu. Now, Click on "Buddypress Friends" folder.

Noted that: If you do not see "Buddypress Friends" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about Buddypress Friends Configurtions and Settings or How to work "Buddypress Friends" in your WordPress site.

After Activated Plugin According to Step-6 then,

Go to "Plugins" + "Installed Plugin" from Wordpress Admin Panel Leftside Menu.
or Direct go to: https://yourdomain/wp-admin/plugins.php
Then, Find "Buddypress Friends" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is Buddypress Friends
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide

Guide
Upload `buddypress-friends.php` to the `/wp-content/plugins/` directory Activate the plugin through the ‘Plugins’ menu in WordPress Instructions: Note: This plugin is for extending the functionality of Buddypress. Buddypress must be installed. Install the plugin Drag an instance of the widget into the desired sidebar Type in a title for your widget Select the maximum number of friend to be shown in the list Select a width and a height for the avatar images, a trial and error approach can be used to get them to fit the way you want Check the box for ‘current member mode’ if you want to show the friends of the member who’s profile you are looking at If you want to just display a list of links with no image check the ‘Display as List’ checkbox

Upload buddypress-friends.php to the /wp-content/plugins/ directory
Activate the plugin through the ‘Plugins’ menu in WordPress

Instructions:

Note: This plugin is for extending the functionality of Buddypress. Buddypress must be installed.

Install the plugin
Drag an instance of the widget into the desired sidebar
Type in a title for your widget
Select the maximum number of friend to be shown in the list
Select a width and a height for the avatar images, a trial and error approach can be used to get them to fit the way you want
Check the box for ‘current member mode’ if you want to show the friends of the member who’s profile you are looking at
If you want to just display a list of links with no image check the ‘Display as List’ checkbox

current, user, logged, friends, displays, adds, widget, buddypress, plugin,

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Reffered: https://wordpress.org/