I’m interested in adding some additional fields for actors, such as his/her children’s names, occupation, etc. I guess I could put this all under description, but it would be nice to separate these fields since I’ll be adding this information for each speaker. Is there any way to add such fields?
There is the possibility to add custom fields to Actor. These are called Keys. See section 4.6 of the Arbil manual for details.
Unfortunately there is no easy way to modify the template in such a way that you would automatically get these custom fields when you create a new actor, but you could work around this by creating an empty actor with only the custom fields added, then saving this as a favourite and subsequently use this as the basis for new actors.