Yes, you can modify the GuestPoints per night attributed to your home. This amount is changeable by up to 30 GPs more than the amount recommended by HomeExchange.
That being said, we recommend that you do not modify the automatic value of GuestPoints per night of your home. It is important that your home is neither undervalued nor overvalued in order to efficiently attract guests, to finalize your exchanges with ease, and to be honest in regards to your guests in order to receive positive ratings.
To add the 30 GPs to your home, click on "My home" from the drop down menu in the top right of the screen and then use the slider seen below to adjust the existing number of GuestPoints per night of your home:
Be sure to save your changes before leaving the page!