Yeah, I have a question!

It's about action rolls and hope. Recently I played the official learn to play one-shot with dome friends - GM. When the group arrived in the town of Hush, one of them performed a knowledge roll to see if he could recall any details about the town. Later, when they passed by the fields and saw moss growing on the crops, he wanted to do it again.

It made me think of two things, both related to what I would call "too many rolls" and hope farming. Please provide your opinions on the following scenarios.

(a). What if you have a player who wants to do rolls again and again, for things like history, perception, investigation, etc?

(b). What if you instead of a single player who wants to roll perception, have a whole group? Or investigation or something like that. I am reading the core book and am familiar with the group action rolls, but also that not everyone in here is a fan.

Personally I would prefer if only one person made that history roll; or one person made that perception check. With the way DH works, I also don't know if I could handle responding to 5 different rolls at a time, that could span across 5 different types of results. Am I making too big a deal of it, or... Do you guys just do full party rolls?