Generally the Physical Presence of the Allottee is required 3 (Three) Times.
First time : For Submitting the required Documents in the Samreddhi's Office. Any Authorized person on behalf of the allottee can submit the Documents. Visit at Samreddhi office at Ground Floor, C-443, Sector-19, Noida -Back Side entry). You can also courier all the documents.
Second time : For Signing the Documents . All Allottee(s) must visit personally. (Visit at Samreddhi office at Ground Floor, C-443, Sector-19, Noida -Back Side entry)
Third time : At the day of registration all allotees have to come. (Visit to the Registrar office Sector 33 Noida)