I have a need to add a Lookup field in addition to the ones that
are already there in the Tasks module. I've seen this thread and
so understand that the reason lookup fields may not be part of it is
that there are already links to the tables ( https://help.zoho.com/portal/en/community/topic/custom-fields-on-task-module ).
We need to create an additional Contacts lookup that will be used
for another purpose related to the task (e.g. identifying a Task Leader).
Is it possible to add an additional Custom Field to Tasks that is a Lookup?