Thanks for the video Stef! So you are trying to filter the Users list based on the drop-downs values right? Something like this : Multiple Custom Filters - #4 by dilon_perera
And what information are stored in the Guides collection? I’m thinking that you have created that to store guiders and I think you don’t need that because I see that you have a true/false property to now that and you can create the One to Many relationships between that specific collections with the Users collection and add some filters with the drop-down value in the Users list!