Releases 1.0 and 2.0 of LisaProject do not allow resources to work on
different tasks simultaneously. When your tasks do not have the dates you
anticipated, rename your resources so that each resource has a unique name.
For example, if "Joe" is working on two parallel tasks, rename the resource
Joe 1 and Joe 2, so the program treats them as two different resources.
Resources also impact the scheduling of tasks later on in the project, so
keep an eye on them.
LisaProject 3.0 lets you schedule resources in parallel.