== why I do not have the option of Blogs in my component setup ==
Because you need to make it multisite first i.e. create a network https://codex.wordpress.org/Create_A_Network
1. Deactivate all plugins including BuddyPress
2. Create the network – if you hit some snags, support forum is at https://wordpress.org/support/forum/multisite
3. Before installing BP – https://codex.buddypress.org/getting-started/before-installing/
Thank you for the prompt reply. I have read about setting this up and it seems a bit of a nightmare with the limited knowledge I have of things such as PHP, HTML and CSS so I think unless I can find a step by step video (I always seem to relate to these better than words) I will give the whole idea a miss.
All I really wanted to do was have my own blog on the site and not blogs of lots of people. This would be easier if I could do something with the menu but even that is not possible using the theme I have chosen so back to the drawing board.
One thing I did find was I could link with a menu tab to my existing blog by using the Mr D’s Blog as the page name. The only problem with this was it created a double lined tab presumably due to the number of letters in the name.