Show slips from all users

Hello, thank you for a greate plugin.

Are there any way for us to show all slips from all or group of users?
In the Slips.php I can see “betpress_get_user_awaiting_slips($user_ID)” etc, with “$user_ID = get_current_user_id();”, can we somehow instead of using user ID now use something like user role to filter, so the Slips page would show slips from all user in a specific role.

Do you have any suggestions ?
Thank you.