Use one of the following methods to pan, zoom, or frame clips in the Clips viewThe area in the Timeline Editor window where you add, position, and manipulate clips. More info
See in Glossary:
To pan, Middle-drag, or hold Alt and drag.
To zoom vertically, move the scroll-wheel, or hold Alt and right-drag.
To zoom horizontally, hold Command/Control and zoom vertically.
To frame all selected clips, select one or multiple clips and press F.
To frame all clips vertically, press A.