I tried to see if a style can apply to part of a caption and apparently the answer is no. At least I can find no way to do it. The suggested I might try selecting a full caption complete with its full desired formatting and then click "Update caption to match selection". Which I did, but the problem still exists - "Table 1" etc as Times 10 while the rest of the caption is Calibri 12. So I guess I'll just live with it. Thanks for all your efforts, though.