[quote="Aspirin":3xk7wi8i]So you said that "Right now epesi does not support nested arrays". If epesi does not support that, why we have ability to add new sub arrays under appropriated or new groups. Why this function (sub groups) coded for? We haven't got EpesiBIM handbook and we have to find this important points via using forum.[/quote:3xk7wi8i]
The thing is, CommonData module, on which Contacts and Companies groups are based, does support sub-arrays, while Contacts and Companies themselves do not use this functionality.
At this point you are right we need to either implement sub-groups or at least disable option of adding sub-arrays in those particular CommonData arrays, and we'll look into it soon.
I'm sorry we can't provide any sort of manual for epesi, but as epesi is still very rapidly evolving project, such handbook would be out-of-date in no time.
I hope this helps at least a little bit,
Arek