Hi
Are you referring to SUBTITLES or Simple text.? I prefer using simple text.
Subtitles are automatically aligned at the bottom and AFAIK can't be moved or resized. Here is a two line SUBTITLE...
You may feel this is too large so use simple text...
Simple text on the other hand can be placed in any position and made different sizes and colours...Here is a simple text of two lines in different colours (two reflect two people speaking) and placed at the bottom of the screen...using the text editor controls.

If the text is too high the font can be reduced in size quite easily........

As simple text is an IMAGE it can be placed anywhere within the frame using the POSITION effect
Example of simple text can be positioned in time by dragging the image along the timeline. Two lines can also be used where required by placing Text 1 on Track 2 and placing Text 2 on Track 3....

If they are placed in different positions and overlapped on the different tracks Text 1 will appear first followed by text 2 under it.
Note that if text 1 is entered into the editor and followed by an empty new line (Just Enter) then it will jump up a line and consequently will leave a space for Text 2 to appear in.

So...for many reasons I would use simple text.
Nat