Depends on the situation

I would tell them to do what is best for them and wish them well.

I would tell them to reconsider

Just be there to hear them out. Sometimes, whatever issues that the coworker faced may be a warning for whatever situation may come about later on in the workplace.

I’ve worked from home on a customer service position .

Stay unless it has to with their family or health

Their decision

Depends on their reasons, if they are not happy in their position I would ask the reasons, they may need to speak to a supervisor. Are thre environment problems, it's too vague a question to give a good overall response.

What ever the case may be yes I would help them move on to a job that they would like: Or try to keep them on until you hire more employees then they can move on

I would tell them to stay until they found a better job in these days now cost of living is high and everything is going up just quitting would not be a good solution finding another job to maintain a steady income would be very logical cause what if you quit now and can’t find another job and your last check is gone you set yourself up to lose both ways