I have a process where I am assigning multiple tasks to multiple users and have

Hi Leslie, you can take the list of users and groups that the User chooses, e.g approvers, and run the subprocess once for each item in that list.
Use the run once for each item in option on the other tab of the subprocess call.
Make sure you map the list down into the subprocess. For the calling process this will be a list of type User or Group, in the subprocess it will be a single item. Then use that single item to assign the task in the subprocess. You'll end up with an approval task assigned to each user or group the original user selected.

Hi Leslie, you can take the list of users and groups that the User chooses, e.g approvers, and run the subprocess once for each item in that list.
Use the run once for each item in option on the other tab of the subprocess call.
Make sure you map the list down into the subprocess. For the calling process this will be a list of type User or Group, in the subprocess it will be a single item. Then use that single item to assign the task in the subprocess. You'll end up with an approval task assigned to each user or group the original user selected.