In the System Center 2012 Orchestrator Runbook Designer the Activities window is docked right. When you must handle numerous Integration Packs with many Activities this view becomes very small.
If you need more space you can undock the Activity window in Runbook Designer
and change the size using your mouse.
If you need an alphabetical view of your Activities you can right click a category like ‘System’ or ‘Utilities‘ and choose ‘All Activities’.
You can change it back to categories choosing 'Default'.