Prerequisites
The target computer has Outlook 2016 or later installed;
Find out whether 32 bit or 64 bit version is installed:
In Outlook, choose File.
Select Office Account.
Select About Outlook
Note the Outlook version at the top of the dialog window.
Download the installation package
For 32 bit Outlook version: 32bit package
For 64 bit Outlook version: 64bit packagePackage
Automatic installation
Push the MSI file to the workstation and install;
Create the HKEY_CURRENT_USER\Software\IQX\OneList registry key;
Create a string value called Url in the OneList registry key and specify the OneList URL as its value.
Manual installation
Create C:\IQX folder;
Unblock the zip file the extract it to the C:\IQX folder;
Right click on the Setup.Exe file and select Run As Administrator;
Complete the steps of the installation wizard;
Restart Outlook;
The OneList add-in displays the OneList Settings window when it runs for the first time;
Enter the OneList URL, e.g. https://iqx.onelistapprovals.com, then click the OK button;
The OneList add-in opens Internet Explorer with the OneList log in page;
Log on to OneList;
The OneList ribbon button becomes active and will display you active task count badge if you have any outstanding tasks;
If the button is not visible on the Ribbon then click the ... and find it in the OneList group then pin it to ribbon.
...
Click the OneList button to show and hide the OneList task pane in Outlook.