Customising the import feature


My Dolibarr instalation runs v10.0.2.

I would like to use this chance to express my appreciation for the import feature. It helps automate many processes on the platform.
Moving on, my post relates especially to the importation of tasks through import feature. In the current form one can import tasks without being able to specify the parent task, thus all imported task lay on the same level, under the corresponding project.
Has anyone found a way to import task in the desired arborescent configuration?
Is it possible to add additional target fields for the importation process? If so, how can one add additional target fields?