Form DJP - Jointly owned freehold

My parents jointly owned the leasehold of a flat and a share of the freehold. The freehold is shared with the owners of another flat in the same building. My father passed away earlier this year and my mother is the sole beneficiary of his estate and has been granted administration. I am assisting her with these matters and have a few questions pertaining to form DJP. Do I need to complete separate forms for the leasehold and the freehold? If I do, can I send the two of them together enclosing one copy of the 'Letters of Administration'? For the freehold, do I need to include the other owners of the freehold as applicants and get them to also sign the form?

Many thanks

In addition to the above, the freehold is owned as tenants in common.

Jorge - just the one form DJP plus death certificate required and ensure it refers to both title numbers. The other freeholders don't need to sign the form.

Great, thanks. The death certificate is in Spanish, my father passed away whilst in Spain. I assume enclosing a Letter of Administration would be OK?

Jorge - as long as the proof of death is in English or an authorised translation is included