Currently it is not possible to create an attachment on tables.
Multi line text cannot be put in a box , so Tables can be usefully used for this purpose , but in this case Attachment option shall be possible
Purpose is to provide an "Offset" between the table and a quotation.
Text can be magnetized in a quotation. Tables have different characteristics, it is not possible of link them to a quotation.so for today, it is not possible to set up a "Offset" entera table and a quotation.