The Life Sciences Collaborative Access Team (LS-CAT) provides Macromolecular Crystallography support to our CAT members from eight Universities in the USA, including Northwestern University, University of Michigan, Wayne State University, Michigan State University, University Wisconsin, Vanderbilt University, and University of Illinois at Chicago, and also to General Users. With a one-year dark period approaching for the upgrade of the Advanced Photon Source (APS-U), we are seeking beam time for our CAT Member laboratories at ESRF by way of this Block Allocation Group, consisting of a portion of our CAT Member PIs and their laboratory members, in order to keep supporting their research and future funding. LS-CAT is organizing our CAT Members into this BAG Proposal, and other proposals we will submit, in order to streamline the process for our CAT Members, and for the Staff of Lightsources to which we are applying for access to beam time.