Convert option into instant action : Mass conversion ability

Convert option into instant action : Mass conversion ability

Hello

I tried to create a specific rule in worflow rules area. My purpose was to convert automatically leads into contacts with conditions.
I found on your online documentation a section which explains you can use the function "convert" in instant actions areas.
But when I follow the instructions and try to add "convert" in the instant area, it doesn't display in popup menu.

Does this functionality still exist or do we have to create a new custom function.

For the record, this is the link to your webpage showing the procedure  :  https://www.zoho.com/crm/help/automation/workflow-convert-records.html

Thanks for your help

Martine