Each If-So add-on serves a different purpose and you may choose to install them based on the requirement of your site.
To install If-So Add-ons:
- Download preferred add-on for If-So from the link below
https://www.if-so.com/add-ons-and-integrations/
For example, download the Browser Type & Operating System add-on for If-So. - Extract the downloaded ifso-browser-type-and-operating-system-extensionn.zip file to the WordPress plugins folder yourhostname/wordpress/wp-content/plugins OR
Go to your WordPress Dashboard > Plugins > Add New. Click the Upload Plugin button. Browse to the download file location, select the ifso-browser-type-and-operating-system-extensionn.zip & install the plugin. - Click the Activate Plugin button to activate the If-So Browser Type Add-on plugin on your website. OR
To activate the plugin on your website site go to WordPress Dashboard > Plugins and then click the Activate button for If-So Browser Type Add-on.