How Can I change the Level Expires Date in the Member Plugin

I imported over 500 Members and I am using the Member plugin but I have 2 issues 1 I can't browse through all of them the arrows are grayed out. It would be nice to set multiple access levels and subscriptions for more than 1 member at a time maybe I am missing something.

Second question is I need to change their Level Expires Date to be different then when they are assigned to the subscription level because they are all on different dates currently and I need to be able to adjust them.