Opencard Modificationa

1)Update Version 2.1.0.2 Opencart 2.3 2)Check Out Steps Rename and Additional Fields Step 2: Account & Billing Details -> Sender Details - அனுப்புவரின் விபரம் I want to use an existing address -> i want to use an existing sender detail I want to use a new address -> i want to use different sender name Mobile - Step 3: Delivery Details -> Delivery Address - பெறுநரின் விபரம் Change "Mobile" -> Recipient Contact number This number should be in Shipping note under the Delivery Address Step 4: Delivery Method - >Delivery Date and Time - கொடுக்க வேண்டிய திகதி,நேரம் Personal Message -Text Box [user should be able to use english, tamil ,Sinhala languages font.] [login to view URL] [login to view URL] it should work like above tools . This message should be in Shipping note Step 5: Payment Method ->Payment Method - பணம் செலுத்தும் முறை Step 6: Confirm Order -> Confirm Order- கொள்வனவை உறுதிசெய்க 3)Admin End - Shipping Note & Proof Delivery Print Shipping Note - It's already there . I would like to include recipient mobile number with recipient address and Senders Personal message. Proof of Delivery - It should also in the admin panel next to Shipping note. Proof of delivery should have a field to get customer signature 4)Dash Board - UP Coming deliveries List 15 Upcoming deliveries based on the delivery date 5)Occasion Extension I bought an extension called 'Occasions' its for categorise the products based on the occasions like birthday,wedding,etc.. . The exsisting version will support to 1.5.6 . I tried to contact that extension developer but he is no longer available . can you please help me to install that extensions to support opencart 2.3