Hello Xavier,
I assume you want to add the same resource to all tasks at an assignment
unit of 60%?. If so, temporarily turn off the summary tasks through
Tools > Options, View tab and uncheck "Show summary tasks." Select all
tasks in the project by clicking on the Task Name column heading, then
click the Assign Resoures button on the standard toolbar. Select the
resource's name and enter the 60% in the units area. Click Assign to
assign the resource.
Turn the summary tasks back on.
I hope this helps. Let us know how you get along.
Julie
Project MVP
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