The ornamental design for inserts for a supportassembly, as shown and described.
FIG. 1 is a perspective view of inserts for a support assembly of the present invention;
FIG. 2 is a top plan view thereof; and
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a side elevation view thereof;
FIG. 7 is the other side elevation view thereof;
FIG. 8 is another perspective view thereof, where the individual inserts are in a partially installed configuration;
FIG. 9 illustrates partially installed inserts in a support foot of a support assembly, wherein the broken lines depict the support foot that form no part of the claimed design; and,
FIG. 10 illustrates fully installed inserts in the support foot of FIG. 9, wherein the broken lines depict the support foot that form no part of the claimed design.