D365 CRM/CE: Do not finish the BPF last stage if following Field1 OR Field2 OR Field3 doesnot contain data

D365 CRM/CE: Set the condition on the Form or Business Process Flow(BPF) not to Finish/Complete the last stage, If Field1 or Field2 or Field3 Does not Contain Data.

Finish/Complete the Last Stage of BPF, atleast one fo the field (Field1,Field2, Field3)should have data 

Any help on this would be great!

Thanks