Trying to answer both to @appreciatethehelp and @ferguspearson
A table is indeed an object but it does not behave like a frame. It has no explicit anchor point. Consequently, you can’t change its position like you would on frame to position it where you like in the page.
A table participate in text flow where it has bee inserted, i.e. between two paragraphs. Even if it narrower than page width, its “text flow bounding box” extends from margin to margin. It freezes this area for its exclusive use (hence, it is impossible to format two tables side by side unless you trick Writer with frames containing the tables).
What may have happened with your efforts is you activated a page break before the table. Right-click in the table and Table Properties. Go to Text Flow tab and see if Break is checked.
If this is not the case, attach a sample document to question (you can’t do it on a comment).
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