Installing Custom Field Extension
To install the Custom Field extension, login to your account, navigate to settings and choose the manage extensions page. Find the extension from the list and follow the installation steps to try or buy the extension. If you do not have rights you should have the option to request this extension to be installed by an Admin with rights.
The extension license is based on per resource cost per month or year.
Please login to your account, navigate to Settings -> Extensions to get a cost quote in your local currency.
For more assistance on this Extension, please view the reference section.