As a club we're a collective of people with a shared love of riding our bikes.
We all have different abilities, strengths and weaknesses and form groups of similar abilities. Even within those groups there will be a range of abilities. Whilst it's good to measure yourself against your peers, we're not racing each other.
Compliment those going well, encourage those who say they're struggling.
Wait at the top and bottom of hills if required, and allow those rejoining the group to have some rest.
Take a longer turn on the front if you're feeling strong. Don't feel like you need to take a turn if you're not feeling strong. The joy of riding in a group is why we're in this club, let's make riding in a group a joy.