1. Agree on the required number of hrs per week on projects. 2. Agree with managers that a higher degree of planning might be required for the work given to colleague. 3. Ensure consistent workload. Avoid adhoc task assignments or dips, spikes in workload 4. Give room to the colleague to manage his deliverables 5. Agree with managers to reduce unwanted meetings etc. (or other distractions) for the colleague to give him the required time for the assigned work

Work in shared resource scenario is challenging for both manager and team member. Some approaches that can be considered. 1. Clarity on percentage allocation across projects - agreements in terms of days of week or hours of day can help schedule work effectively. 2. Encourage collaboration between the managers for shared resource work allocation and priorities so they can support peak load situations. 3. Encourage managers to clearly communicating expectations and providing opportunity to balance work load after peak load situations to maintain overall utilization levels. 4. Providing an open platform for the resource to communicate challenges he is facing and finding balanced solution to the challenges so ensure he stays motivated.

To resolve conflicts between project managers over shared resources: 1. Identify the root cause 2. Gather information on project priorities and resource requirements 3. Facilitate a meeting to discuss and identify solutions 4. Apply resource allocation criteria (priority, urgency, business value) 5. Negotiate a solution 6. Make a decision ensuring fairness and transparency 7. Communicate and monitor progress Use a resource allocation matrix and governance process to prevent future conflicts.

People and other resources already booked onto work should have priority over new requests for them. If there is a clash then you as the program manager should make a trade-off, in terms of overall gain or loss for the company, risks, and knock-on effects. This is far from easy and should involve project managers and possibly senior managers. Make sure it's clear to everyone who decides on resource allocation!