Extended Reality (XR) headsets enable large, reconfigurable multi-display workspaces and support view manipulation, allowing the workspace to reposition itself around the user. Cursor warping similarly reduces traversal distance and pointer search by reinitialising the cursor at defined locations. Yet when both mechanisms operate together, the spatial relationship between user, displays, and cursor becomes dynamic, and it remains unclear how cursor repositioning behaves when the workspace itself moves. In a study (N=20) of five cursor-warping strategies with two view manipulations, we show that the benefits of both do not automatically combine: workspace motion can disrupt spatial consistency and alter both performance and movement costs. We show that continuous cursor movement in world space is limited compared to alternative warping techniques, and cursor behaviour and view control are tightly coupled. Hence, cursor initialisation and view manipulation must be co-designed to support efficient and comfortable interaction in XR multi-display environments.

People differ in how much they move their head versus their eyes when shifting gaze, yet such tendencies remain largely unexplored in HCI. We introduce head movement tendencies as a fundamental dimension of individual difference in VR and provide a quantitative account of their population-level distribution. Using a 360° video free-viewing dataset (N = 87), we model head contributions to gaze shifts with a hinge-based parametric function, revealing a spectrum of strategies from eye-movers to head-movers. We then conduct a user study (N = 28) combining 360° video viewing with a short controlled task using gaze targets. While parameter values differ across tasks, individuals show partial alignment in their relative positions within the population, indicating that tendencies are meaningful but shaped by context. Our findings establish head movement tendencies as an important concept for VR and highlight implications for adaptive systems such as foveated rendering, viewport alignment, and multi-user experience design.

Head-mounted displays let users explore virtual environments through a viewport that is coupled with head movement. In this work, we investigate gaze as an alternative modality for viewport control, enabling exploration of virtual worlds with less head movement. We designed three techniques that leverage gaze based on different eye movements: Dwell Snap for viewport rotation in discrete steps, Gaze Gain for amplified viewport rotation based on gaze angle, and Gaze Pursuit for central viewport alignment of gaze targets. All three techniques enable 360-degree viewport control through naturally coordinated eye and head movement. We evaluated the techniques in comparison with controller snap and head amplification baselines, for both coarse and precise viewport control, and found them to be as fast and accurate. We observed a high variance in performance which may be attributable to the different degrees to which humans tend to support gaze shifts with head movement.