Zizi64 thanks for your reponse and examples.
The table needs to be inserted in a section in an existing document.
Your suggestions requires I create lets say, four new columns in the existing document and then merge all the cells I dont want tables in. Whats left is the faux table.
This creates too much editing and copying of all the other cell data into the new merged cells. It is counter productive and unproductive and will only work if you know in advance you will need a table.I dont have that liberty.
What I am looking for is to insert an object (a table). Your first solution which is the standard one, unfortunately requires extra spreadsheets for the table data which makes things clunky and unwieldy.
What is needed is a table object that can be inserted. - period.
Anyway thanks for your help, it is appreciated, but there doesnt seem to be a rational solution to this problem and Libreoffice cannot do it without changing the existing document radically.
Thanks it is appreciated.