[ solved ] - Service Contracts - doubt

[joebordes]

I'm not quite sure what you want to do. If you want to add Service Contracts to the calendar related field and then you will need a cbupdater update with some vtlib code to capture the field and add the relation. That is in case you want to share it with everyone. If you just want to add it to your install a simple vtlib script can do that easily or directly insert into vtiger_fieldmodulerel

If you want to fill in other fields, the field mapping business map should be able to do that or you can add some code to the EditView.php script in calendar like you will find in Payments, or many inventory modules.