Pre-made pods for users : how to transfer ownership/control?

As part of being a pod provider, you might want to generate pods that already have data about a person in it.

For example: a company wants to move the HR or payment data of their employees to a solid pod.
The employees don’t even need to know the data is on a pod, but the pods will be made for them.

Only when they want to have control of that pod, it is given.

How can this transfer of control of a data-pod happen best.

(there are other scenario’s where such a transfer of control/ownership might be needed).

If the user already has a webid, one option is to change the ACLs to make them the owner?

If by pod you mean both pod+new webid, then you could leave the ACLs as-is and allow them to change their password for the webid?