Which tools or techniques are used in the Plan Schedule Management process?

A scope management plan describes:

When can pre-assignment of project team members occur?

Quality and credibility of the qualitative risk analysis process requires that different levels of the risk's probabilities and impacts be defined is the definition of what?

While a project manager is on vacation, team members are unable to decide whether to utilize internal resources or acquire outside support. The team is unsure of how and what to acquire within the budget and risk factors.
What should the team members do next?