Hi. I have a problem when creating a table of contents.
So, let's say I have this document:

I would like to add 'sample text' to the list of contents. I then click on References -> Add Text -> Level 1 or Level 2 (whichever is appropriate). And here's what happened after it was added to the table of contents:

This is Times New Roman, 20, bold, and centered text. I then add it to the level 2 table of contents, and here's what happens afterward:

As you can see, the text is now using Calibri, font 14, with numbering and italic formatting.
So, whenever I add a new table of contents, I must always change the font, remove the numbering, remove the italic formatting, and re-center it manually.
Also, I can't re-center it automatically because the center before adding the table of contents and after is different. It is slightly to the left, so not centered. I then also need to add a single tab to it so that it is placed right in the center.
How do I add text to the table of contents without changing its formats?
*If you need to see the file, the file is private files, not public ones.. so please tell me how can I share you the file privately, thank you.