SAP Cloud SDK : Custom OVS for Custom Business Object and Add Into Extension Fields

Hi Experts,

I have created custom business object Called ChainAccount

businessobject ChainAccount {

     element ChainAccount : BusinessPartnerInternalID;

     element Description : LANGUAGEINDEPENDENT_MEDIUM_Text;

     element CheckFlag : Indicator;

}

I have created Object Based Navigation screen and upload data through XML file Input

When I am going for creating custom OVS using right click on Custom Business object and Select OVS screen I have followed below steps :

1) Select Query

2) Select Element from Custom BO

3) And Click on OK button and added new screen under my Custom Solution (OVS screen).

Requirement:

1)  How to make filter in Custom OVS based on ChainAccount mean how to search ChainAccount in OVS screen.

2)  How Make this OVS as public OVS

3)  How to Add this custom OVS into standard business object extension fields.

4)  How to selected valued from custom OVS populated in extension field.

Please let me know how to achieve this above requirements.

Regards,

Mithun