Dealing with people offloading

Madwoman I think the group all need to be told the ‘group rules’ by being reminded at the start of meetings that the aim is to be positive and distract from stories of misery and health probs.After a few sessions they will all get it ( hopefully).
After being involved with older people ( am one myself!?) in groups, you can’t be too vague about it or embarrassed about trying to enforce it.In my experience selfish people will never easily give up the chance to dominate others with sob stories.

?

You could refer them to GransNet?

Have a two minute slot where everyone gets to offload to someone and vice versa and then no more moans are allowed. Keep reminding people about the purpose of the group. If someone starts up, the leader(s) should say, "I'll have to stop you there Vera, we've all had our sharing session. Now let's talk about..." Or interrupt them and ask to speak to the long suffering soul they're annoying.