Global Custom field allow to add new field in any form or any object in odoo . there are know knowledge need technical knowledge . Global Custom Fields Global , all in one custom fields all in one , project Custom Fields , project Dynamic Fields , all in one extra fields ,Global CRM custom fields CRM , Global product custom fields products , Global sale order custom fields sale order , Global employee custom fields employee , contract custom field contract ,
project custom fields project ,Global partner custom fields partner , Global purchase custom fields purchase , Global manufacturing custom fields manufacturing , Global task custom fields task , Global leave custom fields leave , Global account cusotm fields account , Global MRP custom fields MRP , extar fields sale order , Gloabl Extra fields
...and many more!