batch renewal

Feeling rather stupid to post this question…
I have a free membership and want to give the 200 members an extra week…so I like to change the expiry date from 2 tot 9 march.
In the membershipslevel I was able to change this; however eacht individual member expires still on 2 march (tomorrow!).

Can I do this in one batch or do I have to change 200 individual users :-(>

Thanks for your reply
Karin the netherlands

https://wordpress.org/plugins/paid-memberships-pro/