You can filter out any unwanted venues from your offer list and fade them from your map by doing the following:
Go to the venue's 'card'. You can locate the venue by scrolling the map or by searching for them by name in the upper search bar.
Click the ... symbol at the upper right corner of the venue's card:
Voila, the venue is now blocked on your ResQ account!
After blocking a venue, you can unblock the venue the same way in the app by selecting "Unblock".
A favorite venue can't be blocked. First, you need to remove the venue from your favorites (instructions can be found in this article). After that, you can block it!