How are you managing OTBI Agents

Summary: We have some analysis/dashboards that we want to schedule and send out as specific times using agents. Question is there any best practices around the management of these agents.

Content (required):

Question 1 : where do you recommend storing them? We are thinking of creating a centralized a folder or folders under /shared/custom instead of them being stored in User folders.

Question 2: are agents not copied down to test/dev environments during a clone. Worried that we are going to have to scramble to shut these down in test or dev after a clone.

Question 3: do you open up the ability to create agents to a few users or all users?