If you simply want static text, be sure that NO SCROLLING is chosen in the text editor.
But if your goal is to scroll text over a colored background, click ADD OBJECT in the tool bar, click ADD A BLANK CLIP, then click the color box. Place the clip on the time line.
To superimpose text click ADD OBJECT|ADD SIMPLE TEXT. Compose. No scroll. Exit the text editor to create the clip and place it on track 2, just above the color background.
To animate it - in this case scrolling from the left, stopping, then scrolling off screen... (See keyframes for a tutorial.)
Click the FX button on the text clip in the time line, click the green + at the left of the toolbar and choose the POSITION effect. The smaller green + near the middle of the effects window toolbar will add keyframes. Or create them by dragging the blue line in the graph. Once created, a keyframe can be dragged around in the graph.
To achieve this effect, the graph will look similar to this...
The result will look like this...
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