You can create the title block by using the table tool, after creating the required table convert it to block.
1. Here is the link to the details on Inserting Table
https://turbocaddoc.atlassian.net/wiki/spaces/T2UG/pages/100925790/Insert+TableCreating
2. You can also change the row and columns of the table and can edit the text according to your need.
Find the links below for the details
Changing Rows and Columns, Merging Cells
Modify Table
https://turbocaddoc.atlassian.net/wiki/spaces/T2UG/pages/100925809/Modify+Table
3. After the modification, convert the table to block, and your title block is ready.
Here is the link to the details on Block
https://turbocaddoc.atlassian.net/wiki/spaces/T2UG/pages/101646362/Creating+a+Block
For reference, you can open the template file (A3) in TurboCAD, title block will be available to you in the paper space.