Macro that links a check box with a linked cell on a worksheet.

Looking for some assistance. I am a very very basic VBA user and have written a macro that allows me to transfer data from cells in one work sheet to a database set up on another worksheet.
The macro i currently have allows each subsequent entry to go onto the next blank line on the worksheet.
My problem is i have check boxes on the input worksheet and i have no idea how to write into my existing macro how to have the one which are checked to transfer onto the database in a corresponding column, and populate the next blank row similar to the other cells. Can anyone help?
I attached the document i am working on to see if anyone can help and to allow you to see visually what i am going on about.