Once you have created your account with Goodlord, simply login if required and work your way through the questions as they are presented. Questions marked with an asterisk are required fields. You'll need to take a photo of your ID or upload a scanned image so make sure you have this ready. Any documents you need to upload can be done through the same platform.
This is possible through something called 'apportioning the rent', and it works like this. If the rent was £650 a month, due on the 13th of the month, and you wanted it changing to the 23rd of each month, the difference of this would be 9 days. The calculation would be: (£650.00 x 12 / 365)*9. This calculates the daily rent (because there are different number of days in different months) and times it by the number of days required.