[TYPO3-english] Modify Realty Manager Extension

[joh ha]

Hi,

I've been found  "Realty Manager" and this is very good for me, a list view, a search view, a single view. That is great. But, the fields of "Edit Realty object "  form are not suitable for me. So, my question is:

What can I do for modify the extension?

For example, I need fields like this:

Living room - Yes
Dining room - Yes
Kitchen - Yes
Balcony - No
Garden -No

Thanks.